92.2% of Mercedes-Benz GLBs passed the 2024 MOT (6,885 first tests): 90.6% at the first attempt and 1.6% after a fix at the test centre (PRS). About 1 in 10 failed the first attempt. For its age, it fails 25% less often than normal: MOT Risk Index 75.3 (95% CI 70.0–81.0; 100 = normal).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| MOT pass rate | 92.2 | % | incl. 1.6% fixed at the test centre | 2024 | 6885 |
| Passed at the first attempt | 90.6 | % | all first tests | 2024 | 6885 |
| MOT Risk Index (95% CI 70.0–81.0) | 75.3 | index | 100 = normal for its age · rank 219 (tied) of 761 (1 = fails least for its age) | 2024 | 6885 |
| Biggest excess: Tyres | 6.6 | per 100 | 5.7 same-age | 2019–2024 | 9723 |
| Dangerous defects | 4.4 | per 100 | 11.2 UK, not age-adjusted | 2019–2024 | 9723 |
| Advisory items | 59.1 | per 100 | 127.1 UK, not age-adjusted | 2019–2024 | 9723 |
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Rank | 219 | of 761 | published models, 1 = fails least for its age | 2024 | 6885 |
| Best rank within its 95% interval | 182 | rank | other models held where they are | 2024 | 6885 |
| Worst rank within its 95% interval | 273 | rank | other models held where they are | 2024 | 6885 |
Data release dvsa-2024-v2 (24 Sep 2026) · full dataset (v5). This model's index changed from 75.8 to 75.3 in the 24 September 2026 release, after duplicate test records were removed.
Mercedes-Benz GLB MOTs fail most often on tyres: 6.6 per 100 tests, against 5.7 for UK cars of the same age (2019–2024, n = 9,723).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Tyres | 6.6 | per 100 | 5.7 | 2019–2024 | 646 |
| Visibility | 4.1 | per 100 | 4.4 | 2019–2024 | 398 |
| Brakes | 1.7 | per 100 | 2.3 | 2019–2024 | 170 |
| Lamps, reflectors and electrical equipment | 0.8 | per 100 | 2.0 | 2019–2024 | 82 |
| Seat belts and supplementary restraint systems | 0.6 | per 100 | 0.3 | 2019–2024 | 60 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 9,723 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
The biggest excess for the Mercedes-Benz GLB is tyres at age 4: 5.4 failures per 100 tests, against 4.5 for same-age cars of comparable models (2019–2024, n = 2,589).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Tyres, age 3 | 4.8 | per 100 | 4.2 | 2019–2024 | 6555 |
| Brakes, age 3 | 1.2 | per 100 | 1.8 | 2019–2024 | 6555 |
| Suspension, age 3 | 0.3 | per 100 | 0.6 | 2019–2024 | 6555 |
| Tyres, age 4 | 5.4 | per 100 | 4.5 | 2019–2024 | 2589 |
| Brakes, age 4 | 1.4 | per 100 | 2.4 | 2019–2024 | 2589 |
| Suspension, age 4 | 0.7 | per 100 | 1.2 | 2019–2024 | 2589 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
Mercedes-Benz GLB advisories turn into fails less often than on the median model; the one to watch is tyres: advisories on it became a fail at the next MOT 6.2% of the time.
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Tyres | 6.2 | % next fail | median model | 2019–2024 | 562 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
Mercedes-Benz GLB MOTs flag tyres most: 32.6 advisories per 100 tests, against 39.7 across UK tests (2019–2024, n = 9,723).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Tyres | 32.6 | per 100 | 39.7 | 2019–2024 | 3170 |
| Brakes | 15.8 | per 100 | 34.7 | 2019–2024 | 1536 |
| Non-component advisories | 9.1 | per 100 | 7.8 | 2019–2024 | 882 |
| Suspension | 0.5 | per 100 | 26.2 | 2019–2024 | 52 |
| Identification of the vehicle | 0.5 | per 100 | 2.5 | 2019–2024 | 51 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 9,723 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
For Mercedes-Benz GLBs aged under 3 whose last MOT was a pass, the item most likely to fail at the next MOT is tyres: 4.0% failed on it (2019–2024, n = 1,619).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Tyres, under 3 years old, after a pass | 4.0 | % next fail | 2019–2024 | 1619 | |
| Visibility, under 3 years old, after a pass | 3.2 | % next fail | 2019–2024 | 1619 | |
| Lamps, reflectors and electrical equipment, under 3 years old, after a pass | 1.0 | % next fail | 2019–2024 | 1619 | |
| Brakes, under 3 years old, after a pass | 0.9 | % next fail | 2019–2024 | 1619 | |
| Suspension, under 3 years old, after a pass | 0.6 | % next fail | 2019–2024 | 1619 | |
| Seat belts and supplementary restraint systems, under 3 years old, after a pass | 0.6 | % next fail | 2019–2024 | 1619 | |
| Body, chassis, structure, under 3 years old, after a pass | 0.4 | % next fail | 2019–2024 | 1619 | |
| Noise, emissions and leaks, under 3 years old, after a pass | 0.4 | % next fail | 2019–2024 | 1619 |
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Tyres, under 3 years old, after an advisory (rough estimate: 479 cars) | 5.9 | % next fail | 2019–2024 | 479 | |
| Visibility, under 3 years old, after an advisory (rough estimate: 479 cars) | 3.3 | % next fail | 2019–2024 | 479 | |
| Brakes, under 3 years old, after an advisory (rough estimate: 479 cars) | 1.5 | % next fail | 2019–2024 | 479 | |
| Lamps, reflectors and electrical equipment, under 3 years old, after an advisory (rough estimate: 479 cars) | 1.3 | % next fail | 2019–2024 | 479 | |
| Visibility, under 3 years old, after a fail (rough estimate: 230 cars) | 8.7 | % next fail | 2019–2024 | 230 | |
| Tyres, under 3 years old, after a fail (rough estimate: 230 cars) | 7.0 | % next fail | 2019–2024 | 230 | |
| Brakes, under 3 years old, after a fail (rough estimate: 230 cars) | 2.6 | % next fail | 2019–2024 | 230 | |
| Tyres, 3 to 5 years old, after a pass (rough estimate: 490 cars) | 6.7 | % next fail | 2019–2024 | 490 | |
| Visibility, 3 to 5 years old, after a pass (rough estimate: 490 cars) | 4.1 | % next fail | 2019–2024 | 490 | |
| Seat belts and supplementary restraint systems, 3 to 5 years old, after a pass (rough estimate: 490 cars) | 1.4 | % next fail | 2019–2024 | 490 | |
| Brakes, 3 to 5 years old, after a pass (rough estimate: 490 cars) | 1.2 | % next fail | 2019–2024 | 490 | |
| Suspension, 3 to 5 years old, after a pass (rough estimate: 490 cars) | 1.0 | % next fail | 2019–2024 | 490 | |
| Tyres, 3 to 5 years old, after an advisory (rough estimate: 175 cars) | 5.7 | % next fail | 2019–2024 | 175 | |
| Visibility, 3 to 5 years old, after an advisory (rough estimate: 175 cars) | 5.7 | % next fail | 2019–2024 | 175 | |
| Brakes, 3 to 5 years old, after an advisory (rough estimate: 175 cars) | 4.6 | % next fail | 2019–2024 | 175 | |
| Visibility, 3 to 5 years old, after a fail (rough estimate: 106 cars) | 4.7 | % next fail | 2019–2024 | 106 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
The Mercedes-Benz GLB gets a dangerous defect less often than the UK average: 4.4 per 100 first tests against 11.2 across the UK. In the same tests, 7.5 major and 3.7 minor defects were recorded per 100 tests (one test can record several).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Dangerous defects | 4.4 | per 100 | 11.2 | 2019–2024 | 9723 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 9,723 (initial tests) · Method: one initial test per test_id; severity not recorded for some 2018–2021 tests · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
First-time MOT failures for the Mercedes-Benz GLB go from 8.5% at age 3 to 11.1% at age 4, against 13.1% for all cars aged 4 (2024, n = 6,885). Older Mercedes-Benz GLBs are not in the MOT data yet.
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Age 3 | 8.5 | % failed first time | 12.4 | 2024 | 3992 |
| Age 4 | 11.1 | % failed first time | 13.1 | 2024 | 2588 |
Source: DVSA MOT bulk data · Window: 2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
At every age shown, Mercedes-Benz GLBs fail first time no more often than comparable models of the same size class; the biggest difference is at age 3, where they fail less often: 9.4% against 11.7% (2024, n = 6,555).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Age 3 | 9.4 | % fail | 11.7 | 2024 | 6555 |
| Age 4 | 11.1 | % fail | 13.3 | 2024 | 2589 |
Source: DVSA MOT bulk data · Window: 2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
Expected repair cost per Mercedes-Benz GLB MOT: about £10 (up to about £18 if more expensive parts are needed), from the chance of failing each item and its most common UK repair price (catalogue estimate, n = 6,885).
Computed, not measured.
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Expected repair bill | 9.6 | GBP estimate | modal price catalogue | price catalogue | 6885 |
| Estimated range lower | 9.6 | GBP estimate | modal price catalogue | price catalogue | 6885 |
| Estimated range upper | 18.3 | GBP estimate | modal price catalogue | price catalogue | 6885 |
| Tyres: Tyre (single mid-range 16" fitted) | 5.9 | GBP expected contribution | 90 | price catalogue | 6885 |
| Brakes: Front brake pads (parts + labour, typical hatchback) | 2.5 | GBP expected contribution | 150 | price catalogue | 6885 |
| Lamps, reflectors and electrical equipment: Battery replacement (standard 12V lead-acid) | 1.1 | GBP expected contribution | 140 | price catalogue | 6885 |
Source: DVSA MOT bulk data · Window: price catalogue · n = 6,885 (initial tests) · Method: computed estimate, not measured · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
Of 8 similar models, 2 fail less often for their age than the Mercedes-Benz GLB and 6 as often or more. The Mercedes-Benz GLB has an MOT Risk Index of 75.3, where 100 = normal for its age (2024, n = 6,885).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Mercedes-Benz GLB (this model) | 75.3 | index | 100 = normal | 2024 | 6885 |
| Mercedes-Benz SLC | 70.9 | index | 75.3 | 2024 | 8972 |
| Ford Edge | 75.5 | index | 75.3 | 2024 | 8935 |
| MG TF | 75.2 | index | 75.3 | 2024 | 9385 |
| Volvo S90 | 78.5 | index | 75.3 | 2024 | 7633 |
| Volkswagen California | 76 | index | 75.3 | 2024 | 10101 |
| Subaru XV | 83.5 | index | 75.3 | 2024 | 6682 |
| Mitsubishi Lancer | 81.6 | index | 75.3 | 2024 | 9907 |
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Alfa Romeo Giulia | 86.5 | index | 75.3 | 2024 | 6777 |
Source: DVSA MOT bulk data · Window: 2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
At age 4, the median Mercedes-Benz GLB had covered 33,834 miles by its MOT; the middle half ranged from 25,420 to 42,911 miles (2024, n = 2,588).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Age 3 median | 26214 | miles | 2024 | 3992 | |
| Age 3 P25 | 19578 | miles | 2024 | 3992 | |
| Age 3 P75 | 34213 | miles | 2024 | 3992 | |
| Age 4 median | 33834 | miles | 2024 | 2588 | |
| Age 4 P25 | 25420 | miles | 2024 | 2588 | |
| Age 4 P75 | 42911 | miles | 2024 | 2588 |
Source: DVSA MOT bulk data · Window: 2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
At ages 3–5, 8.2% of Mercedes-Benz GLBs with under 40,000 miles failed first time, against 19.8% of those with 70,000 to 100,000 miles (2024, n = 5,309). Inside this age group, higher mileage goes with more failures.
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Age 3–5, <40k miles | 8.2 | % failed first time | 2024 | 5218 | |
| Age 3–5, 40-70k miles | 14.3 | % failed first time | 2024 | 1259 | |
| Age 3–5, 70-100k miles (rough estimate: 91 tests, 95% interval 12.9–29.1%) | 19.8 | % failed first time | 2024 | 91 |
Source: DVSA MOT bulk data · Window: 2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
0.1% of Mercedes-Benz GLBs tested had reached 100,000 miles, and 0.0% had reached 150,000 (2024, n = 13).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| 100,000 miles (rough estimate: 13 tests, 95% interval 0.1–0.2%) | 0.1 | % of tested cars | 2024 | 13 | |
| 150,000 miles (rough estimate: 1 tests, 95% interval 0.0–0.1%) | 0.0 | % of tested cars | 2024 | 1 | |
| 200,000 miles (rough estimate: 1 tests, 95% interval 0.0–0.1%) | 0.0 | % of tested cars | 2024 | 1 |
Source: DVSA MOT bulk data · Window: 2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
Matched on annual mileage as well as age, the Mercedes-Benz GLB index is 71.2, against 75.6 on age alone (2019–2024, n = 6,885).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Age and mileage adjusted index | 71.2 | index | 75.6 | 2019–2024 | 6885 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
There is no real difference between diesel and petrol Mercedes-Benz GLBs before allowing for age: 10.0% against 8.6% fail first time.
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Diesel | 10.0 | % fail first time | other fuels | 2024 | 3902 |
| Petrol | 8.6 | % fail first time | other fuels | 2024 | 2981 |
Source: DVSA MOT bulk data · Window: 2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
No Mercedes-Benz GLB engine band clearly fails less or more for its age: the capacity bands are within 5 index points of each other or their 95% intervals overlap (2024, n = 6,885).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Petrol 1.2–1.5 litre (rough estimate: 3,351 tests, 95% interval 84.0–104.7) | 93.9 | index vs model norm | 100 = model average | 2024 | 3351 |
| Diesel 1.8–2.0 litre | 103 | index vs model norm | 100 = model average | 2024 | 6358 |
Source: DVSA MOT bulk data · Window: 2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
Mercedes-Benz GLB fails first-time MOTs most in Guildford (GU): 17.4% against 9.6% across Britain for this model, both 2019–2024 (2024, n = 138).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Guildford (GU) (rough estimate: 138 tests, 95% interval 12.0–24.6%) | 17.4 | % fail first time | 9.4 | 2024 | 138 |
| Croydon (CR) (rough estimate: 108 tests, 95% interval 9.3–22.7%) | 14.8 | % fail first time | 9.4 | 2024 | 108 |
| Reading (RG) (rough estimate: 228 tests, 95% interval 9.7–18.7%) | 13.6 | % fail first time | 9.4 | 2024 | 228 |
| Kingston upon Thames (KT) (rough estimate: 202 tests, 95% interval 1.1–5.7%) | 2.5 | % fail first time | 9.4 | 2024 | 202 |
| London E (E) (rough estimate: 128 tests, 95% interval 2.2–9.9%) | 4.7 | % fail first time | 9.4 | 2024 | 128 |
| Milton Keynes (MK) (rough estimate: 198 tests, 95% interval 2.8–9.0%) | 5.0 | % fail first time | 9.4 | 2024 | 198 |
| Stockport (SK) (rough estimate: 224 tests, 95% interval 9.5–18.5%) | 13.4 | % fail first time | 9.4 | 2024 | 224 |
| Dartford (DA) (rough estimate: 142 tests, 95% interval 8.7–20.0%) | 13.4 | % fail first time | 9.4 | 2024 | 142 |
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Warrington (WA) (rough estimate: 118 tests, 95% interval 7.9–19.9%) | 12.7 | % fail first time | 9.4 | 2024 | 118 |
| Hemel Hempstead (HP) (rough estimate: 147 tests, 95% interval 7.9–18.5%) | 12.2 | % fail first time | 9.4 | 2024 | 147 |
| Glasgow (G) (rough estimate: 219 tests, 95% interval 8.2–16.8%) | 11.9 | % fail first time | 9.4 | 2024 | 219 |
| Leicester (LE) (rough estimate: 144 tests, 95% interval 7.5–18.1%) | 11.8 | % fail first time | 9.4 | 2024 | 144 |
| Birmingham (B) (rough estimate: 241 tests, 95% interval 7.8–15.8%) | 11.2 | % fail first time | 9.4 | 2024 | 241 |
| Manchester (M) (rough estimate: 101 tests, 95% interval 6.2–18.5%) | 10.9 | % fail first time | 9.4 | 2024 | 101 |
| Bristol (BS) (rough estimate: 206 tests, 95% interval 7.2–15.6%) | 10.7 | % fail first time | 9.4 | 2024 | 206 |
| London SE (SE) (rough estimate: 148 tests, 95% interval 6.2–16.1%) | 10.1 | % fail first time | 9.4 | 2024 | 148 |
| Romford (RM) (rough estimate: 160 tests, 95% interval 6.2–15.6%) | 10 | % fail first time | 9.4 | 2024 | 160 |
| Edinburgh (EH) (rough estimate: 152 tests, 95% interval 6.1–15.6%) | 9.9 | % fail first time | 9.4 | 2024 | 152 |
| Coventry (CV) (rough estimate: 102 tests, 95% interval 5.4–17.1%) | 9.8 | % fail first time | 9.4 | 2024 | 102 |
| Cardiff (CF) (rough estimate: 128 tests, 95% interval 5.4–15.7%) | 9.4 | % fail first time | 9.4 | 2024 | 128 |
| Newcastle (NE) (rough estimate: 128 tests, 95% interval 5.4–15.7%) | 9.4 | % fail first time | 9.4 | 2024 | 128 |
| Sheffield (S) (rough estimate: 155 tests, 95% interval 5.5–14.6%) | 9.0 | % fail first time | 9.4 | 2024 | 155 |
| Medway (ME) (rough estimate: 111 tests, 95% interval 5.0–15.8%) | 9.0 | % fail first time | 9.4 | 2024 | 111 |
| Northampton (NN) (rough estimate: 156 tests, 95% interval 5.4–14.5%) | 9.0 | % fail first time | 9.4 | 2024 | 156 |
| Tonbridge (TN) (rough estimate: 108 tests, 95% interval 4.4–15.1%) | 8.3 | % fail first time | 9.4 | 2024 | 108 |
| Twickenham (TW) (rough estimate: 121 tests, 95% interval 4.5–14.5%) | 8.3 | % fail first time | 9.4 | 2024 | 121 |
| Nottingham (NG) (rough estimate: 147 tests, 95% interval 4.7–13.7%) | 8.2 | % fail first time | 9.4 | 2024 | 147 |
| Liverpool (L) (rough estimate: 174 tests, 95% interval 4.9–13.1%) | 8.1 | % fail first time | 9.4 | 2024 | 174 |
| London NW (NW) (rough estimate: 240 tests, 95% interval 5.1–12.0%) | 7.9 | % fail first time | 9.4 | 2024 | 240 |
| Southampton (SO) (rough estimate: 101 tests, 95% interval 4.1–14.9%) | 7.9 | % fail first time | 9.4 | 2024 | 101 |
| Stoke-on-Trent (ST) (rough estimate: 102 tests, 95% interval 4.0–14.7%) | 7.8 | % fail first time | 9.4 | 2024 | 102 |
| Peterborough (PE) (rough estimate: 167 tests, 95% interval 4.6–12.9%) | 7.8 | % fail first time | 9.4 | 2024 | 167 |
| Swindon (SN) (rough estimate: 110 tests, 95% interval 3.7–13.7%) | 7.3 | % fail first time | 9.4 | 2024 | 110 |
| Bolton (BL) (rough estimate: 125 tests, 95% interval 3.8–13.1%) | 7.2 | % fail first time | 9.4 | 2024 | 125 |
| Chelmsford (CM) (rough estimate: 227 tests, 95% interval 3.4–9.6%) | 5.7 | % fail first time | 9.4 | 2024 | 227 |
| Ilford (IG) (rough estimate: 144 tests, 95% interval 2.8–10.6%) | 5.6 | % fail first time | 9.4 | 2024 | 144 |
Source: DVSA MOT bulk data · Window: 2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
Allowing for age, Mercedes-Benz GLB MOTs record corrosion failures at 0.0 times the national rate: 0.01% of tests against 0.77% (2024 + geographic layers, n = 6,885).
Computed, not measured.
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Salt belt susceptibility | 0.0 | ratio estimate | 1 | 2024 + geographic layers | 6885 |
Source: DVSA MOT bulk data · Window: 2024 + geographic layers · n = 6,885 (initial tests) · Method: computed estimate, not measured · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
All Mercedes-Benz GLBs tested are likely ULEZ-compliant, judged from fuel type and first-use date; check a specific car with TfL's vehicle checker (2024).
Computed, not measured.
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Likely compliant | 100 | % estimate | 2024 | 6885 |
Source: DVSA MOT bulk data · Window: 2024 · n = 6,885 (initial tests) · Method: computed estimate, not measured · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
Of failed Mercedes-Benz GLB MOTs, 39.7% were retested the same day and a further 58.6% within 10 days; the median failed car passed its retest after 1 day (2019–2024, n = 703).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Same-day retest | 39.7 | % | failed initial tests | 2019–2024 | 703 |
| Retest within 10 days | 58.6 | % | failed initial tests | 2019–2024 | 703 |
| Decreasing odometer | 0.3 | % mileage anomaly | observed chains | 2019–2024 | 2788 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
In 2024, at least as many Mercedes-Benz GLBs were tested at age 4 as at ages 4 to 6 (2024, n = 2,589).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Age 3 (at least as many as at ages 4–6) | 100 | % of age 4–6 baseline | 2024 | 6555 | |
| Age 4 | 100 | % of age 4–6 baseline | 2024 | 2589 |
Source: DVSA MOT bulk data · Window: 2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
5.4% of Mercedes-Benz GLBs that failed an MOT failed the next one too, against 10.5% after a pass (2019–2024, n = 112).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Repeat after fail | 5.4 | % | 10.5 | 2019–2024 | 112 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
On Mercedes-Benz GLBs, brakes and tyres failures turn up together 3.7 times as often as chance would predict (2024, n = 21).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Brakes + Tyres (rough estimate: 21 tests, 95% interval 2.3–5.6) | 3.7 | lift | expected joint rate | 2024 | 21 |
| Tyres + Visibility (rough estimate: 49 tests, 95% interval 2.0–3.6) | 2.8 | lift | expected joint rate | 2024 | 49 |
| Brakes + Visibility (seen together; too few for a multiplier) | 18 | tests with both | 2024 | 18 | |
| Lamps, reflectors and electrical equipment + Visibility (seen together; too few for a multiplier) | 12 | tests with both | 2024 | 12 | |
| Lamps, reflectors and electrical equipment + Tyres (seen together; too few for a multiplier) | 12 | tests with both | 2024 | 12 | |
| Seat belts and supplementary restraint systems + Tyres (seen together; too few for a multiplier) | 10 | tests with both | 2024 | 10 | |
| Identification of the vehicle + Tyres (seen together; too few for a multiplier) | 6 | tests with both | 2024 | 6 | |
| Suspension + Tyres (seen together; too few for a multiplier) | 5 | tests with both | 2024 | 5 |
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Seat belts and supplementary restraint systems + Visibility (seen together; too few for a multiplier) | 5 | tests with both | 2024 | 5 |
Source: DVSA MOT bulk data · Window: 2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
DVSA lists 29 safety recall campaigns matched to the Mercedes-Benz GLB; check whether yours has been fixed, using its registration number.
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| DVSA recall campaigns matched | 29 | campaigns | DVSA register | DVSA register | 6885 |
Source: DVSA register; recall effect covers 11 of 761 models · Window: DVSA register · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
Of every 100 Mercedes-Benz GLBs tested at age 3, about 9 failed the MOT first time; at age 4, about 11. These are one-year rates for different cars tested in the same year, not a fleet followed over time (2024).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Age 3 | 8.5 | % fail first time | 2024 | 3992 | |
| Age 4 | 11.1 | % fail first time | 2024 | 2588 |
Source: DVSA MOT bulk data · Window: 2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
NHTSA lists 274 US technical service bulletins for the Mercedes-Benz GLB (US market, Mercedes-Benz GLB-CLASS and its variants, model years 2020–2022 only); a count, not a UK failure rate.
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| US service bulletins | 274 | bulletins | NHTSA | NHTSA | 6885 |
| Year 2016 | 1 | bulletins | NHTSA | NHTSA | 6885 |
| Year 2019 | 1 | bulletins | NHTSA | NHTSA | 6885 |
| Year 2020 | 24 | bulletins | NHTSA | NHTSA | 6885 |
| Year 2021 | 31 | bulletins | NHTSA | NHTSA | 6885 |
| Year 2022 | 21 | bulletins | NHTSA | NHTSA | 6885 |
| Year 2023 | 15 | bulletins | NHTSA | NHTSA | 6885 |
| Year 2024 | 50 | bulletins | NHTSA | NHTSA | 6885 |
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Year 2025 | 76 | bulletins | NHTSA | NHTSA | 6885 |
| Year 2026 | 55 | bulletins | NHTSA | NHTSA | 6885 |
Source: NHTSA, US market, Mercedes-Benz GLB-CLASS and its variants, model years 2020–2022 only; covers 211 of 761 models · Window: NHTSA · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
The most common US owner complaint about the Mercedes-Benz GLB to NHTSA concerns lamps & electrical: 15 complaints (US market, Mercedes-Benz GLB-CLASS and its variants, model years 2020–2022 only).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Lamps & electrical | 15 | complaints | NHTSA + 2024 | 15 | |
| Body & structure | 15 | complaints | NHTSA + 2024 | 15 | |
| Engine (not MOT-tested) | 13 | complaints | NHTSA + 2024 | 13 | |
| Suspension | 9 | complaints | NHTSA + 2024 | 9 | |
| Restraints | 8 | complaints | NHTSA + 2024 | 8 | |
| Steering | 4 | complaints | NHTSA + 2024 | 4 |
Source: NHTSA, US market, Mercedes-Benz GLB-CLASS and its variants, model years 2020–2022 only; covers 211 of 761 models · Window: NHTSA + 2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
In the Netherlands, 21.6% of Mercedes-Benz GLBs failed their periodic roadworthiness inspection, against 50.8% for all cars there (2024 by country, n = 806 inspections).
Inspections abroad point the same way: in the Netherlands the Mercedes-Benz GLB also fails less often than the national average.
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Netherlands | 21.6 | % failed | 50.8 | 2024 by country | 806 |
Source: Statens vegvesen PKK (CC BY 4.0), Traficom Katsastus (CC BY 4.0), RDW APK (CC0), adapted; covers 430 of 761 models · Window: 2024 by country · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV · licences and full notice
Mercedes-Benz GLBs fail first time most in September (11.8%, against 28.2% for all cars that month) and least in March (6.3%) (2024, n = 6,885).
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| January | 9.2 | % fail first time | 31.1 | 2024 | 326 |
| February | 8.2 | % fail first time | 30.0 | 2024 | 486 |
| March | 6.3 | % fail first time | 28.3 | 2024 | 602 |
| April | 10.2 | % fail first time | 29.8 | 2024 | 372 |
| May | 10.0 | % fail first time | 28.8 | 2024 | 579 |
| June | 9.2 | % fail first time | 28.1 | 2024 | 995 |
| July | 10.4 | % fail first time | 29.3 | 2024 | 1093 |
| August | 9.3 | % fail first time | 29.2 | 2024 | 990 |
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| September | 11.8 | % fail first time | 28.2 | 2024 | 1318 |
| October | 10.1 | % fail first time | 30.3 | 2024 | 1134 |
| November | 8.9 | % fail first time | 30.6 | 2024 | 1008 |
| December | 8.4 | % fail first time | 29.3 | 2024 | 820 |
Source: DVSA MOT bulk data · Window: 2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
not computed for this model: no qualifying records. 6,885 initial Mercedes-Benz GLB tests are in the published model cohort.
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
See the Mazda CX-3, a car of the same inspection class with 3.7× the tests · Check your car by registration
not computed for this model: no qualifying records. 6,885 initial Mercedes-Benz GLB tests are in the published model cohort.
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 6,885 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
See the Mazda CX-3, a car of the same inspection class with 3.7× the tests · Check your car by registration
not computed for this model: no qualifying records. 6,885 initial Mercedes-Benz GLB tests are in the published model cohort.
Source: DVSA MOT bulk data · Window: survival forecast · n = 6,885 (initial tests) · Method: computed estimate, not measured · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
See the Mazda CX-3, a car of the same inspection class with 3.7× the tests · Check your car by registration
layer not yet computed for this model (covers 19 of 761 models). 6,885 initial Mercedes-Benz GLB tests are in the published model cohort.
Source: European Commission OBFCM; covers 19 of 761 models · Window: 2021+ cohorts · n = 6,885 (initial tests) · Method: computed estimate, not measured · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
See the Mazda CX-3, a car of the same inspection class with 3.7× the tests · Check your car by registration
MOT Risk Index (2026). Mercedes-Benz GLB MOT statistics 2024 (data release dvsa-2024-v2; full dataset motriskindex-families-2024-v5, DOI 10.5281/zenodo.22975051), updated 24 September 2026. motriskindex.co.uk/cars/mercedes-glb/
How the MOT Risk Index and every figure on this page are calculated: methodology.
What is wrong on this page? One tap sends the category only, no text and nothing about you.
90.6% of first attempts passed in 2024 (6,885 tests). Retests after repair are excluded; cars fixed at the test centre (PRS) are shown separately.
Other sites may count retests or all attempts. This page uses 6,885 primary tests: 9.4% failed first time and 92.2% passed when cars fixed at the test centre (PRS) count as passes. The age-adjusted MOT Risk Index 75.3 is shown separately.