Land Rover Defender 2015: MOT failure rate for its age

19.8% of 40,349 MOT tests of the Land Rover Defender first registered in 2015 failed at the first attempt (2019–2024; retests excluded). Against this model's own normal rate at the same ages the index is 91.5 (95% CI 89.5–93.5; 100 = normal for this model at that age): the 2015 Land Rover Defender fails less often than other build years of the same model at the same age.

Land Rover Defender built in 2015 at a glance
Measure	Value	Unit	Compared with	Years	Tests
Failed first time	19.8	%	all ages tested	2019–2024	40349
Index against this model at the same age (95% CI 89.5–93.5)	91.5	index	100 = normal for this model at that age	2019–2024	40349
Rank among this model's 20 build years	3	of 20	1 = fails least for its age	2019–2024	40349
Tested in 2024	6511	tests	median 43,216 miles	2024	6511

Built 2015 against Land Rover Defender normal for the age: first-time MOT failure share at each age, age 4: 18.3% vs 16.3%; age 5: 18.7% vs 20.3%; age 6: 20.5% vs 22%; age 7: 20.6% vs 22.4%; age 8: 20.7% vs 24.1%; age 9: 20.1% vs 25.2%. Axis from 0% to 30%. DVSA MOT bulk data, 2019–2024.

Check a 2015 Land Rover Defender by registration · All Land Rover Defender 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 2015 Land Rover Defender fail at each age?

Cars built in 2015 were tested at ages 4 to 9 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.

Land Rover Defender built 2015: 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)
4	6,953	18.3	17.4–19.2	16.3	111.9
5	6,600	18.7	17.7–19.6	20.3	92.1
6	7,001	20.5	19.5–21.4	22	93.2
7	6,683	20.6	19.7–21.6	22.4	92.3
8	6,601	20.7	19.8–21.7	24.1	86.2
9	6,511	20.1	19.1–21.1	25.2	79.8

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 40,349 (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 2015 Land Rover Defender?

The most common failure group on cars built in 2015 is lamps, reflectors and electrical equipment: 12.6 items per 100 first tests, against 30.5 across all build years of the Land Rover Defender. These counts are not age-adjusted: cars built in 2015 were tested at ages 4 to 9.

Failure items per 100 first tests, Land Rover Defender built 2015 against the Land Rover Defender in all build years (2019–2024, not age-adjusted)
Failure group	Built 2015, per 100	All build years, per 100	Items
Lamps, reflectors and electrical equipment	12.6	30.5	5,067
Visibility	8.7	12.9	3,497
Brakes	7	16.8	2,814
Suspension	6.9	20.3	2,778
Steering	2.7	18.8	1,102

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 40,349 (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 2015 compare with the years around it?

Among the 20 published build years of the Land Rover Defender, 2015 ranks 3 (1 = fails least for its age). 2014: index 96.6. 2016: index 87.7.

Land Rover Defender build years: index against the model at the same age (2019–2024)
Build year	Index (100 = normal)	95% interval	Verdict	Tests
1998	99.4	95.8–103.0	no different	7,279
1999	101.9	98.6–105.1	no different	9,575
2000	106.1	103.2–109.0	worse	12,676
2001	104.9	102.4–107.4	worse	16,495
2002	99.0	96.9–101.1	no different	23,814
2003	101.7	99.7–103.7	no different	26,548
2004	99.1	97.1–101.1	no different	25,597
2005	98.5	96.5–100.6	no different	24,914
2006	100.8	98.6–103.0	no different	22,628
2007	98.5	96.3–100.6	no different	23,970
2008	98.5	96.3–100.8	no different	22,292
2009	102.9	100.5–105.3	worse	21,117
2010	102.0	99.8–104.3	no different	24,195
2011	104.2	101.8–106.6	worse	23,871
2012	104.4	102.0–106.9	worse	23,451
2013	102.2	99.8–104.6	no different	26,255
2014	96.6	94.5–98.7	better	35,231
2015	91.5	89.5–93.5	better	40,349
2016	87.7	83.7–91.6	better	11,357
2020	80.8	75.2–86.5	better	8,187

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 429,801 (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). Land Rover Defender 2015 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/land-rover-defender/2015/

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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