Mazda CX-3 2017: MOT failure rate for its age

10.5% of 25,347 MOT tests of the Mazda CX-3 first registered in 2017 failed at the first attempt (2019–2024; retests excluded). Against this model's own normal rate at the same ages the index is 92.1 (95% CI 88.6–95.6; 100 = normal for this model at that age): the 2017 Mazda CX-3 fails less often than other build years of the same model at the same age.

Mazda CX-3 built in 2017 at a glance
Measure	Value	Unit	Compared with	Years	Tests
Failed first time	10.5	%	all ages tested	2019–2024	25347
Index against this model at the same age (95% CI 88.6–95.6)	92.1	index	100 = normal for this model at that age	2019–2024	25347
Rank among this model's 5 build years	1	of 5	1 = fails least for its age	2019–2024	25347
Tested in 2024	4863	tests	median 44,464 miles	2024	4863

Built 2017 against Mazda CX-3 normal for the age: first-time MOT failure share at each age, age 3: 5.7% vs 6.9%; age 4: 8.9% vs 9.4%; age 5: 11.6% vs 11.7%; age 6: 13% vs 13.5%; age 7: 14% vs 16.2%. Axis from 0% to 20%. DVSA MOT bulk data, 2019–2024.

Check a 2017 Mazda CX-3 by registration · All Mazda CX-3 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 2017 Mazda CX-3 fail at each age?

Cars built in 2017 were tested at ages 3 to 7 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.

Mazda CX-3 built 2017: 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	5,879	5.7	5.2–6.4	6.9	82.5
4	4,870	8.9	8.1–9.7	9.4	94.7
5	4,881	11.6	10.8–12.6	11.7	99.2
6	4,854	13	12.1–14	13.5	96.3
7	4,863	14	13.1–15	16.2	86.8

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 25,347 (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 2017 Mazda CX-3?

The most common failure group on cars built in 2017 is visibility: 5.8 items per 100 first tests, against 5.7 across all build years of the Mazda CX-3. These counts are not age-adjusted: cars built in 2017 were tested at ages 3 to 7.

Failure items per 100 first tests, Mazda CX-3 built 2017 against the Mazda CX-3 in all build years (2019–2024, not age-adjusted)
Failure group	Built 2017, per 100	All build years, per 100	Items
Visibility	5.8	5.7	1,483
Tyres	4.2	4.6	1,061
Brakes	3.2	3.1	826
Suspension	1.7	2.2	430
Lamps, reflectors and electrical equipment	1.5	2	389

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 25,528 (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 2017 compare with the years around it?

Among the 5 published build years of the Mazda CX-3, 2017 ranks 1 (1 = fails least for its age). 2016: index 113.0. 2018: index 93.5.

Mazda CX-3 build years: index against the model at the same age (2019–2024)
Build year	Index (100 = normal)	95% interval	Verdict	Tests
2015	106.5	102.2–110.8	worse	14,269
2016	113.0	109.7–116.4	worse	29,618
2017	92.1	88.6–95.6	better	25,347
2018	93.5	89.6–97.4	better	22,725
2019	100.1	95.8–104.3	no different	22,988

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 114,947 (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). Mazda CX-3 2017 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/mazda-cx-3/2017/

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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