Jeep Grand Cherokee 2018: MOT failure rate for its age

13.5% of 1,687 MOT tests of the Jeep Grand Cherokee 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 92.7 (95% CI 80.6–104.8; 100 = normal for this model at that age): the 2018 build year is no different from other years of the same model at the same age. This is a rough estimate from a smaller sample.

Jeep Grand Cherokee built in 2018 at a glance
Measure	Value	Unit	Compared with	Years	Tests
Failed first time	13.5	%	all ages tested	2019–2024	1687
Index against this model at the same age (95% CI 80.6–104.8)	92.7	index	100 = normal for this model at that age	2019–2024	1687
Rank among this model's 18 build years	3	of 18	1 = fails least for its age	2019–2024	1687
Tested in 2024	412	tests	median 50,100 miles	2024	412

Built 2018 against Jeep Grand Cherokee normal for the age: first-time MOT failure share at each age, age 3: 14.6% vs 12.9%; age 4: 13.3% vs 13.9%; age 5: 11.1% vs 15.4%; age 6: 14.6% vs 16%. Axis from 0% to 20%. DVSA MOT bulk data, 2019–2024.

Check a 2018 Jeep Grand Cherokee by registration · All Jeep Grand Cherokee 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 Jeep Grand Cherokee 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.

Jeep Grand Cherokee 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	444 (rough estimate)	14.6	11.7–18.2	12.9	113.5
4	427 (rough estimate)	13.3	10.4–16.9	13.9	95.7
5	404 (rough estimate)	11.1	8.4–14.6	15.4	72.5
6	412 (rough estimate)	14.6	11.5–18.3	16	91

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 1,687 (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 Jeep Grand Cherokee?

The most common failure group on cars built in 2018 is visibility: 6.9 items per 100 first tests, against 8.4 across all build years of the Jeep Grand Cherokee. These counts are not age-adjusted: cars built in 2018 were tested at ages 3 to 6.

Failure items per 100 first tests, Jeep Grand Cherokee built 2018 against the Jeep Grand Cherokee in all build years (2019–2024, not age-adjusted)
Failure group	Built 2018, per 100	All build years, per 100	Items
Visibility	6.9	8.4	118
Lamps, reflectors and electrical equipment	5	20.3	85
Tyres	4.8	5.1	81
Brakes	4.2	15.6	72

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 1,700 (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 18 published build years of the Jeep Grand Cherokee, 2018 ranks 3 (1 = fails least for its age). 2017: index 88.1. 2019: index 75.4.

Jeep Grand Cherokee build years: index against the model at the same age (2019–2024)
Build year	Index (100 = normal)	95% interval	Verdict	Tests
2001	96.4	87.1–105.6	no different (rough estimate)	1,029
2002	103.2	95.7–110.7	no different (rough estimate)	1,687
2003	102.9	95.2–110.7	no different (rough estimate)	1,611
2004	111.3	104.9–117.6	worse (rough estimate)	2,665
2005	93.3	88.8–97.7	better	4,662
2006	93.1	88.9–97.2	better	5,470
2007	98.0	90.4–105.7	no different (rough estimate)	1,850
2008	109.2	99.9–118.4	no different (rough estimate)	1,528
2009	112.8	94.2–131.4	no different (rough estimate)	426
2011	114.5	103.2–125.7	worse (rough estimate)	1,421
2012	106.2	98.9–113.6	no different (rough estimate)	3,432
2013	109.6	103.9–115.4	worse	6,199
2014	102.1	97.4–106.9	no different	9,087
2015	96.9	91.9–101.9	no different	8,579
2016	98.5	92.4–104.6	no different	6,270
2017	88.1	81.1–95.0	better	4,555
2018	92.7	80.6–104.8	no different (rough estimate)	1,687
2019	75.4	59.1–91.8	better (rough estimate)	781

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 62,939 (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). Jeep Grand Cherokee 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/jeep-grand-cherokee/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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