Citroen Relay 2018: MOT failure rate for its age

20.9% of 2,329 MOT tests of the Citroen Relay first registered in 2018 failed at the first attempt (2019–2024; retests excluded). Against this model's own normal rate at the same ages the index is 87.6 (95% CI 79.8–95.4; 100 = normal for this model at that age): the 2018 Citroen Relay fails less often than other build years of the same model at the same age. This is a rough estimate from a smaller sample.

Citroen Relay built in 2018 at a glance
Measure	Value	Unit	Compared with	Years	Tests
Failed first time	20.9	%	all ages tested	2019–2024	2329
Index against this model at the same age (95% CI 79.8–95.4)	87.6	index	100 = normal for this model at that age	2019–2024	2329
Rank among this model's 20 build years	3	of 20	1 = fails least for its age	2019–2024	2329
Tested in 2024	544	tests	median 44,303 miles	2024	544

Built 2018 against Citroen Relay normal for the age: first-time MOT failure share at each age, age 3: 17.1% vs 17%; age 4: 23% vs 24.6%; age 5: 22.7% vs 26.4%; age 6: 20.8% vs 27.5%. Axis from 0% to 30%. DVSA MOT bulk data, 2019–2024.

Check a 2018 Citroen Relay by registration · All Citroen Relay MOT statistics · Download the build-year table (CSV)

Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · full dataset (v5).

How does the 2018 Citroen Relay fail at each age?

Cars built in 2018 were tested at ages 3 to 6 between 2019 and 2024. Each row compares their first-time failure share with what this model normally shows at that age, after allowing for the overall failure level of each test year.

Citroen Relay built 2018: first-time MOT failure by age, against the model's normal rate at that age (2019–2024)
Age	Tests	Failed, %	95% interval	Normal for this model at that age, %	Index (100 = normal)
3	568	17.1	14.2–20.4	17	100.2
4	601	23	19.8–26.5	24.6	93.4
5	616	22.7	19.6–26.2	26.4	85.9
6	544	20.8	17.6–24.4	27.5	75.5

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 2,329 (initial tests) · Method: normal rate = this model's first-time failure share at that age across its build years (cells of 400+ tests), adjusted for each test year's overall level; cells of 30+ tests, under 500 marked rough · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV

What fails most on the 2018 Citroen Relay?

The most common failure group on cars built in 2018 is visibility: 12.2 items per 100 first tests, against 17.8 across all build years of the Citroen Relay. These counts are not age-adjusted: cars built in 2018 were tested at ages 3 to 6.

Failure items per 100 first tests, Citroen Relay built 2018 against the Citroen Relay in all build years (2019–2024, not age-adjusted)
Failure group	Built 2018, per 100	All build years, per 100	Items
Visibility	12.2	17.8	289
Lamps, reflectors and electrical equipment	11	36.2	261
Brakes	8	23.9	190
Suspension	2.8	27.3	66
Tyres	2.6	5.5	62

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 2,378 (initial tests of this build year) · Method: failure items grouped by DVSA's top-level defect groups, per 100 initial tests; groups with 30+ items · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV

How does 2018 compare with the years around it?

Among the 20 published build years of the Citroen Relay, 2018 ranks 3 (1 = fails least for its age). 2017: index 99.2. 2019: index 84.5.

Citroen Relay build years: index against the model at the same age (2019–2024)
Build year	Index (100 = normal)	95% interval	Verdict	Tests
2001	97.3	83.7–111.0	no different (rough estimate)	391
2002	95.1	85.6–104.7	no different (rough estimate)	797
2003	99.6	92.8–106.4	no different (rough estimate)	1,672
2004	100.9	95.1–106.8	no different (rough estimate)	2,352
2005	103.9	99.1–108.6	no different (rough estimate)	3,706
2006	102.0	98.2–105.8	no different	5,850
2007	105.6	101.9–109.3	worse	6,412
2008	95.7	91.8–99.6	better	5,465
2009	100.2	95.2–105.1	no different (rough estimate)	3,719
2010	98.5	94.0–103.0	no different	4,686
2011	102.7	97.5–107.9	no different (rough estimate)	3,866
2012	95.1	90.0–100.2	no different (rough estimate)	3,881
2013	100.3	95.2–105.4	no different	4,387
2014	107.0	102.1–111.9	worse	5,406
2015	97.5	93.3–101.7	no different	7,161
2016	98.1	93.6–102.5	no different	7,232
2017	99.2	94.5–103.9	no different	7,418
2018	87.6	79.8–95.4	better (rough estimate)	2,329
2019	84.5	74.9–94.1	better (rough estimate)	1,563
2020	84.7	69.1–100.3	no different (rough estimate)	657

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 78,950 (initial tests) · Method: observed failures against those expected for the same model at the same ages, test-year level adjusted; verdict follows the printed one-decimal bound · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV

How to cite this page

MOT Risk Index (2026). Citroen Relay 2018 MOT statistics (data release dvsa-2024-v2; full dataset motriskindex-families-2024-v5, DOI 10.5281/zenodo.22975051), updated 30 September 2026. motriskindex.co.uk/cars/citroen-relay/2018/

How every figure is calculated: methodology. Age, test year and build year are tied together (age = test year − build year), so the test-year level is taken as observed, not estimated.

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