82.2% of Jaguar XJS models passed the 2024 MOT (based on 3,075 first tests): 79.5% at the first attempt and 2.7% after a fix at the test centre (PRS).About 1 in 5 failed the first attempt.For its age, it fails 41% less often than normal: MOT Risk Index 59.1 (95% CI 55.1–63.3; 100 = normal).
Jaguar XJS at a glance, 2024 MOT
Measure
Value
Unit
Compared with
Years
Tests
MOT pass rate
82.2
%
incl. 2.7% fixed at the test centre
2024
3075
Passed at the first attempt
79.5
%
all first tests
2024
3075
MOT Risk Index (95% CI 55.1–63.3)
59.1
index
100 = normal for its age · rank 129 (tied) of 761 (1 = fails least for its age)
2024
3075
Biggest excess: Brakes
19.1
per 100
20.3 same-age
2019–2024
20814
Dangerous defects
8.3
per 100
11.2 UK, not age-adjusted
2019–2024
20814
Advisory items
123.0
per 100
127.1 UK, not age-adjusted
2019–2024
20814
MOT Risk Index · Jaguar XJS. 0–240; 100 = normal for its age; median model 92.8 · rank 129 (tied) of 761 (1 = fails least for its age). It would rank between 119 and 154 anywhere within its 95% interval, other models held where they are. DVSA, 2024.
Data release dvsa-2024-v2 (24 Sep 2026) · full dataset (v5). This model's index changed from 53.3 to 59.1 in the 24 September 2026 release, after duplicate test records were removed.
What actually fails on a Jaguar XJS MOT, and how often?
Jaguar XJS MOTs fail most often on ‘lamps, reflectors and electrical equipment’: 21.1 per 100 tests, against 29.5 for UK cars of the same age (2019–2024, n = 20,814).
DVSA MOT bulk data, 24 Sep 2026.
Jaguar XJS: the numbers behind this answer (2019–2024)
Measure
Value
Unit
Compared with
Years
Tests
Lamps, reflectors and electrical equipment
21.1
per 100
29.5
2019–2024
4383
Brakes
19.1
per 100
20.3
2019–2024
3972
Suspension
11.7
per 100
19.6
2019–2024
2425
Visibility
7.7
per 100
10.7
2019–2024
1604
Body, chassis, structure
5.1
per 100
15.2
2019–2024
1063
Noise, emissions and leaks
5
per 100
7.5
2019–2024
1031
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 20,814 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
Will my Jaguar XJS's advisory become a fail at the next MOT?
Jaguar XJS advisories turn into fails less often than on the median model; the one to watch is brakes: advisories on it became a fail at the next MOT 12.9% of the time.
Advisories on brakes: 12.9 of 100 became a fail on the same item at the next MOT. DVSA MOT bulk data, 24 Sep 2026.
Jaguar XJS: the numbers behind this answer (2019–2024)
Measure
Value
Unit
Compared with
Years
Tests
Brakes
12.9
% next fail
median model
2019–2024
1602
Suspension
10.9
% next fail
median model
2019–2024
3327
Body, chassis, structure
6.5
% next fail
median model
2019–2024
1034
Tyres
5.9
% next fail
median model
2019–2024
1536
Steering
5.2
% next fail
median model
2019–2024
806
Noise, emissions and leaks
4.8
% next fail
median model
2019–2024
2131
Non-component advisories
0
% next fail
median model
2019–2024
550
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 3,075 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
My Jaguar XJS got an MOT advisory: what gets flagged most?
Jaguar XJS MOTs flag suspension most: 48.9 advisories per 100 tests, against 26.2 across UK tests (2019–2024, n = 20,814).
DVSA MOT bulk data, 24 Sep 2026.
Jaguar XJS: the numbers behind this answer (2019–2024)
Measure
Value
Unit
Compared with
Years
Tests
Suspension
48.9
per 100
26.2
2019–2024
10179
Tyres
17.7
per 100
39.7
2019–2024
3683
Noise, emissions and leaks
17.7
per 100
5.2
2019–2024
3675
Brakes
16.4
per 100
34.7
2019–2024
3415
Body, chassis, structure
9.3
per 100
4.6
2019–2024
1933
Steering
5.8
per 100
1.8
2019–2024
1207
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 20,814 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
What is likely to fail next on a Jaguar XJS?
For Jaguar XJS models aged 20 or older whose last MOT was a pass, the item most likely to fail at the next MOT is ‘lamps, reflectors and electrical equipment’: 6.4% failed on it (2019–2024, n = 7,954).
DVSA MOT bulk data, 24 Sep 2026.
Jaguar XJS: the numbers behind this answer (2019–2024)
Measure
Value
Unit
Compared with
Years
Tests
Lamps, reflectors and electrical equipment, 20 years or older, after a pass
6.4
% next fail
2019–2024
7954
Brakes, 20 years or older, after a pass
5.9
% next fail
2019–2024
7954
Suspension, 20 years or older, after a pass
4.0
% next fail
2019–2024
7954
Visibility, 20 years or older, after a pass
3.7
% next fail
2019–2024
7954
Noise, emissions and leaks, 20 years or older, after a pass
2.2
% next fail
2019–2024
7954
Steering, 20 years or older, after a pass
2.1
% next fail
2019–2024
7954
Body, chassis, structure, 20 years or older, after a pass
1.6
% next fail
2019–2024
7954
Tyres, 20 years or older, after a pass
0.7
% next fail
2019–2024
7954
Full table
Further values · 2019–2024
Measure
Value
Unit
Compared with
Years
Tests
Seat belts and supplementary restraint systems, 20 years or older, after a pass
0.5
% next fail
2019–2024
7954
Identification of the vehicle, 20 years or older, after a pass
0.1
% next fail
2019–2024
7954
Speedometer and speed limiter, 20 years or older, after a pass
0.1
% next fail
2019–2024
7954
Lamps, reflectors and electrical equipment, 20 years or older, after an advisory
11.8
% next fail
2019–2024
3706
Brakes, 20 years or older, after an advisory
9.8
% next fail
2019–2024
3706
Suspension, 20 years or older, after an advisory
8.9
% next fail
2019–2024
3706
Visibility, 20 years or older, after an advisory
6.6
% next fail
2019–2024
3706
Steering, 20 years or older, after an advisory
3.8
% next fail
2019–2024
3706
Body, chassis, structure, 20 years or older, after an advisory
3.6
% next fail
2019–2024
3706
Noise, emissions and leaks, 20 years or older, after an advisory
3.5
% next fail
2019–2024
3706
Tyres, 20 years or older, after an advisory
2.5
% next fail
2019–2024
3706
Seat belts and supplementary restraint systems, 20 years or older, after an advisory
0.7
% next fail
2019–2024
3706
Speedometer and speed limiter, 20 years or older, after an advisory
0.2
% next fail
2019–2024
3706
Lamps, reflectors and electrical equipment, 20 years or older, after a fail
17.4
% next fail
2019–2024
3580
Brakes, 20 years or older, after a fail
12.6
% next fail
2019–2024
3580
Suspension, 20 years or older, after a fail
9.0
% next fail
2019–2024
3580
Visibility, 20 years or older, after a fail
8.3
% next fail
2019–2024
3580
Noise, emissions and leaks, 20 years or older, after a fail
4.8
% next fail
2019–2024
3580
Steering, 20 years or older, after a fail
4.5
% next fail
2019–2024
3580
Body, chassis, structure, 20 years or older, after a fail
4.0
% next fail
2019–2024
3580
Tyres, 20 years or older, after a fail
2.2
% next fail
2019–2024
3580
Seat belts and supplementary restraint systems, 20 years or older, after a fail
1.8
% next fail
2019–2024
3580
Identification of the vehicle, 20 years or older, after a fail
0.4
% next fail
2019–2024
3580
Speedometer and speed limiter, 20 years or older, after a fail
0.2
% next fail
2019–2024
3580
Road wheels, 20 years or older, after a fail
0.1
% next fail
2019–2024
3580
Lamps, reflectors and electrical equipment, an unknown age, after a fail (rough estimate: 123 cars)
10.6
% next fail
2019–2024
123
Brakes, an unknown age, after a fail (rough estimate: 123 cars)
7.3
% next fail
2019–2024
123
Noise, emissions and leaks, an unknown age, after a fail (rough estimate: 123 cars)
5.7
% next fail
2019–2024
123
Suspension, an unknown age, after a fail (rough estimate: 123 cars)
5.7
% next fail
2019–2024
123
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 3,075 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
How often does a Jaguar XJS get a dangerous MOT defect?
The Jaguar XJS gets a dangerous defect less often than the UK average: 8.3 per 100 first tests against 11.2 across the UK. In the same tests, 60.3 major and 10.2 minor defects were recorded per 100 tests (one test can record several).
Dangerous defects: 8.3 vs 11.2. DVSA MOT bulk data, 24 Sep 2026.
Jaguar XJS: the numbers behind this answer (2019–2024)
Measure
Value
Unit
Compared with
Years
Tests
Dangerous defects
8.3
per 100
11.2
2019–2024
20814
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 20,814 (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
How much does it cost to fix a Jaguar XJS MOT fail?
Expected repair cost per Jaguar XJS MOT: about £89 (up to about £170 if more expensive parts are needed), from the chance of failing each item and its most common UK repair price (catalogue estimate, n = 3,075).
Computed, not measured.
DVSA MOT bulk data, 24 Sep 2026.
Jaguar XJS: the numbers behind this answer (price catalogue)
Measure
Value
Unit
Compared with
Years
Tests
Expected repair bill
89.3
GBP estimate
modal price catalogue
price catalogue
3075
Estimated range lower
89.3
GBP estimate
modal price catalogue
price catalogue
3075
Estimated range upper
169.6
GBP estimate
modal price catalogue
price catalogue
3075
Lamps, reflectors and electrical equipment: Battery replacement (standard 12V lead-acid)
29.5
GBP expected contribution
140
price catalogue
3075
Brakes: Front brake pads (parts + labour, typical hatchback)
28.6
GBP expected contribution
150
price catalogue
3075
Suspension: Suspension coil spring (single corner)
21.1
GBP expected contribution
180
price catalogue
3075
Noise, emissions and leaks: Exhaust rear silencer
10
GBP expected contribution
200
price catalogue
3075
Source: DVSA MOT bulk data · Window: price catalogue · n = 3,075 (initial tests) · Method: computed estimate, not measured · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
Is the Jaguar XJS more reliable than similar cars?
Of 8 similar models, 2 fail less often for their age than the Jaguar XJS and 6 as often or more. The Jaguar XJS has an MOT Risk Index of 59.1, where 100 = normal for its age (2024, n = 3,075).
DVSA MOT bulk data, 24 Sep 2026.
Jaguar XJS: the numbers behind this answer (2024)
Measure
Value
Unit
Compared with
Years
Tests
Jaguar XJS (this model)
59.1
index
100 = normal
2024
3075
BMW M2
60.9
index
59.1
2024
3719
Lexus LS
55.8
index
59.1
2024
3292
Audi Q8
62.4
index
59.1
2024
4285
Jaguar I-Pace
59.1
index
59.1
2024
18005
Toyota GT86
59.3
index
59.1
2024
6631
Audi S3
62.1
index
59.1
2024
5719
Jaguar XK
59.1
index
59.1
2024
23270
Full table
Further values · 2024
Measure
Value
Unit
Compared with
Years
Tests
Honda Fit
49.5
index
59.1
2024
3980
Source: DVSA MOT bulk data · Window: 2024 · n = 3,075 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
Does high mileage mean more Jaguar XJS MOT failures at the same age?
At ages 15+, 7.7% of Jaguar XJS models with under 40,000 miles failed first time, against 31.4% of those with 70,000 to 100,000 miles (2024, n = 138). Inside this age group, higher mileage goes with more failures.
DVSA MOT bulk data, 24 Sep 2026.
Jaguar XJS: the numbers behind this answer (2024)
Measure
Value
Unit
Compared with
Years
Tests
Age 15+, <40k miles (rough estimate: 52 tests, 95% interval 3–18.2%)
7.7
% failed first time
2024
52
Age 15+, 40-70k miles (rough estimate: 104 tests, 95% interval 13.6–28.9%)
20.2
% failed first time
2024
104
Age 15+, 70-100k miles (rough estimate: 86 tests, 95% interval 22.6–41.8%)
31.4
% failed first time
2024
86
Source: DVSA MOT bulk data · Window: 2024 · n = 3,075 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
How many miles does a Jaguar XJS last?
27.9% of Jaguar XJS models tested had reached 100,000 miles, and 3.4% had reached 150,000 (2024, n = 5,796).
100,000 miles: 27.9. 200,000 miles (rou: 0.4. DVSA MOT bulk data, 24 Sep 2026.
Jaguar XJS: the numbers behind this answer (2024)
Measure
Value
Unit
Compared with
Years
Tests
100,000 miles
27.9
% of tested cars
2024
5796
150,000 miles
3.4
% of tested cars
2024
712
200,000 miles (rough estimate: 74 tests, 95% interval 0.3–0.5%)
0.4
% of tested cars
2024
74
Source: DVSA MOT bulk data · Window: 2024 · n = 3,075 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
Is the Jaguar XJS driven more or less than average, and does that change the picture?
Matched on annual mileage as well as age, the Jaguar XJS index is 78.6, against 75.3 on age alone (2019–2024, n = 3,075).
Age and mileage adjusted index: 75.3 vs 78.6. DVSA MOT bulk data, 24 Sep 2026.
Jaguar XJS: the numbers behind this answer (2019–2024)
Measure
Value
Unit
Compared with
Years
Tests
Age and mileage adjusted index
78.6
index
75.3
2019–2024
3075
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 3,075 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
Which Jaguar XJS fuel fails its MOT less?
All Jaguar XJS models tested were petrol: 20.4% failed first time (2024, n = 3,069).
DVSA MOT bulk data, 24 Sep 2026.
Jaguar XJS: the numbers behind this answer (2024)
Measure
Value
Unit
Compared with
Years
Tests
Petrol
20.4
% fail first time
other fuels
2024
3069
Source: DVSA MOT bulk data · Window: 2024 · n = 3,075 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
Where in Britain does the Jaguar XJS fail its MOT most?
Jaguar XJS fails first-time MOTs most in Exeter (EX): 35.4% against 23.6% across Britain for this model, both 2019–2024 (2024, n = 215).
First-time failure rates for the Jaguar XJS range from 16.3% to 26.1% by area, before allowing for age: a narrower spread than for the typical model.
Scotland. N. England. Wales. London. S. West. % failing. 16%. 26%. DVSA MOT bulk data, 24 Sep 2026.
Source: DVSA MOT bulk data · Window: 2024 · n = 3,075 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
Does a Jaguar XJS rust more than average?
Allowing for age, Jaguar XJS MOTs record corrosion failures at 0.0 times the national rate: 0.03% of tests against 0.77% (2024 + geographic layers, n = 287).
Computed, not measured.
Salt belt susceptibility: 1 vs 0. DVSA MOT bulk data, 24 Sep 2026.
Jaguar XJS: the numbers behind this answer (2024 + geographic layers)
Measure
Value
Unit
Compared with
Years
Tests
Salt belt susceptibility
0.0
ratio estimate
1
2024 + geographic layers
287
Source: DVSA MOT bulk data · Window: 2024 + geographic layers · n = 3,075 (initial tests) · Method: computed estimate, not measured · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
What do six years of MOTs show about owning a Jaguar XJS?
Of failed Jaguar XJS MOTs, 19.3% were retested the same day and a further 67.4% within 10 days; the median failed car passed its retest after 4 days (2019–2024, n = 2,844).
DVSA MOT bulk data, 24 Sep 2026.
Jaguar XJS: the numbers behind this answer (2019–2024)
Measure
Value
Unit
Compared with
Years
Tests
Same-day retest
19.3
%
failed initial tests
2019–2024
2844
Retest within 10 days
67.4
%
failed initial tests
2019–2024
2844
Clean MOT streak
48.7
%
observed chains
2019–2024
3820
Repeat advisory
25.6
%
observed chains
2019–2024
3820
Decreasing odometer
2.4
% mileage anomaly
observed chains
2019–2024
4466
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 3,075 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
If a Jaguar XJS fails, does it fail again?
23.1% of Jaguar XJS models that failed an MOT failed the next one too, against 17.3% after a pass (2019–2024, n = 1,470). The failure most likely to come back is ‘lamps, reflectors and electrical equipment’: 25.8% of those fails recurred at the next MOT.
Repeat after fail: 23.1 vs 17.3. DVSA MOT bulk data, 24 Sep 2026.
Jaguar XJS: the numbers behind this answer (2019–2024)
Measure
Value
Unit
Compared with
Years
Tests
Repeat after fail
23.1
%
17.3
2019–2024
1470
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 3,075 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV
Which Jaguar XJS faults come together?
On Jaguar XJS models, ‘body, chassis, structure’ and seat belts and supplementary restraint systems failures turn up together 8.3 times as often as chance would predict (2024, n = 61).
Jaguar XJS: the numbers behind this answer (2024)
Measure
Value
Unit
Compared with
Years
Tests
Body, chassis, structure + Seat belts and supplementary restraint systems (rough estimate: 61 tests, 95% interval 6.4–10.7)
8.3
lift
expected joint rate
2024
61
Seat belts and supplementary restraint systems + Suspension (rough estimate: 125 tests, 95% interval 6.6–9.4)
7.9
lift
expected joint rate
2024
125
Seat belts and supplementary restraint systems + Tyres (rough estimate: 24 tests, 95% interval 3.8–8.9)
How the MOT Risk Index and every figure on this page are calculated: methodology.
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Jaguar XJS MOT: quick answers
What is the Jaguar XJS first-time MOT pass rate?
79.5% of first attempts passed in 2024 (3,075 tests). Retests after repair are excluded; cars fixed at the test centre (PRS) are shown separately.
Why does this number differ from other sites?
Other sites may count retests or all attempts. This page uses 3,075 primary tests: 20.46% failed first time and 82.2% passed when cars fixed at the test centre (PRS) count as passes. The age-adjusted MOT Risk Index 59.1 is shown separately.