Citroen C3 Aircross 2018: MOT failure rate for its age

13.9% of 38,535 MOT tests of the Citroen C3 Aircross 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 102.9 (95% CI 100.1–105.7; 100 = normal for this model at that age): close to other build years of the same model at the same age (within 5 points of normal).

Citroen C3 Aircross built in 2018 at a glance
Measure	Value	Unit	Compared with	Years	Tests
Failed first time	13.9	%	all ages tested	2019–2024	38535
Index against this model at the same age (95% CI 100.1–105.7)	102.9	index	100 = normal for this model at that age	2019–2024	38535
Rank among this model's 4 build years	3	of 4	1 = fails least for its age	2019–2024	38535
Tested in 2024	9572	tests	median 36,759 miles	2024	9572

Built 2018 against Citroen C3 Aircross normal for the age: first-time MOT failure share at each age, age 3: 9% vs 9.5%; age 4: 11.4% vs 11.1%; age 5: 15.6% vs 14.6%; age 6: 19.6% vs 18.9%. Axis from 0% to 20%. DVSA MOT bulk data, 2019–2024.

Check a 2018 Citroen C3 Aircross by registration · All Citroen C3 Aircross 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 C3 Aircross 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 C3 Aircross 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	9,770	9	8.4–9.6	9.5	94.6
4	9,638	11.4	10.8–12.1	11.1	103.2
5	9,555	15.6	14.8–16.3	14.6	106.8
6	9,572	19.6	18.8–20.4	18.9	104

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 38,535 (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 C3 Aircross?

The most common failure group on cars built in 2018 is brakes: 6.2 items per 100 first tests, against 6.1 across all build years of the Citroen C3 Aircross. These counts are not age-adjusted: cars built in 2018 were tested at ages 3 to 6.

Failure items per 100 first tests, Citroen C3 Aircross built 2018 against the Citroen C3 Aircross in all build years (2019–2024, not age-adjusted)
Failure group	Built 2018, per 100	All build years, per 100	Items
Brakes	6.2	6.1	2,387
Tyres	5.1	5.1	1,959
Body, chassis, structure	4.1	3	1,580
Lamps, reflectors and electrical equipment	2.1	1.8	809
Visibility	2.1	1.9	795

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 38,765 (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 4 published build years of the Citroen C3 Aircross, 2018 ranks 3 (1 = fails least for its age). 2017: index 96.8. 2019: index 102.3.

Citroen C3 Aircross build years: index against the model at the same age (2019–2024)
Build year	Index (100 = normal)	95% interval	Verdict	Tests
2017	96.8	89.4–104.1	no different	4,568
2018	102.9	100.1–105.7	worse	38,535
2019	102.3	98.9–105.7	no different	29,590
2020	107.0	100.4–113.7	worse	9,267

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 81,960 (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 C3 Aircross 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-c3-aircross/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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