Jaguar XJ 2017: MOT failure rate for its age

10.0% of 4,920 MOT tests of the Jaguar XJ 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 81.5 (95% CI 74.3–88.7; 100 = normal for this model at that age): the 2017 Jaguar XJ fails less often than other build years of the same model at the same age.

Jaguar XJ built in 2017 at a glance
Measure	Value	Unit	Compared with	Years	Tests
Failed first time	10.0	%	all ages tested	2019–2024	4920
Index against this model at the same age (95% CI 74.3–88.7)	81.5	index	100 = normal for this model at that age	2019–2024	4920
Rank among this model's 23 build years	2	of 23	1 = fails least for its age	2019–2024	4920
Tested in 2024	926	tests	median 50,233 miles	2024	926

Built 2017 against Jaguar XJ normal for the age: first-time MOT failure share at each age, age 3: 6.8% vs 8.4%; age 4: 8.9% vs 10.8%; age 5: 9.9% vs 12.8%; age 6: 12.9% vs 14.6%; age 7: 11.9% vs 15.4%. Axis from 0% to 20%. DVSA MOT bulk data, 2019–2024.

Check a 2017 Jaguar XJ by registration · All Jaguar XJ 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 Jaguar XJ 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.

Jaguar XJ 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	1,113	6.8	5.5–8.5	8.4	81
4	993	8.9	7.2–10.8	10.8	82.4
5	945	9.9	8.2–12	12.8	78
6	943	12.9	10.9–15.2	14.6	88.7
7	926	11.9	10–14.1	15.4	77.3

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 4,920 (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 Jaguar XJ?

The most common failure group on cars built in 2017 is tyres: 6.3 items per 100 first tests, against 7.3 across all build years of the Jaguar XJ. These counts are not age-adjusted: cars built in 2017 were tested at ages 3 to 7.

Failure items per 100 first tests, Jaguar XJ built 2017 against the Jaguar XJ in all build years (2019–2024, not age-adjusted)
Failure group	Built 2017, per 100	All build years, per 100	Items
Tyres	6.3	7.3	316
Visibility	2.7	7.5	136
Lamps, reflectors and electrical equipment	2.3	12.5	116
Suspension	1.6	23	79
Brakes	1	11.3	51

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 5,016 (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 23 published build years of the Jaguar XJ, 2017 ranks 2 (1 = fails least for its age). 2016: index 95.0. 2018: index 86.0.

Jaguar XJ build years: index against the model at the same age (2019–2024)
Build year	Index (100 = normal)	95% interval	Verdict	Tests
1998	98.2	92.1–104.3	no different (rough estimate)	3,071
1999	105.5	98.5–112.6	no different (rough estimate)	2,518
2000	106.7	100.8–112.7	worse (rough estimate)	3,620
2001	98.4	93.4–103.4	no different	4,819
2002	99.9	94.8–105.1	no different	4,620
2003	97.1	94.0–100.1	no different	12,987
2004	101.3	98.0–104.6	no different	11,809
2005	98.4	94.3–102.5	no different	7,855
2006	104.5	100.6–108.4	worse	9,425
2007	102.8	98.7–106.8	no different	8,735
2008	96.9	92.1–101.7	no different	6,154
2009	100.9	94.3–107.5	no different (rough estimate)	3,627
2010	94.3	90.0–98.6	better	8,616
2011	97.1	92.8–101.4	no different	9,539
2012	97.3	91.8–102.7	no different	6,401
2013	110.5	104.8–116.2	worse	7,086
2014	109.4	103.1–115.6	worse	6,475
2015	99.1	92.6–105.6	no different	5,989
2016	95.0	88.7–101.3	no different	6,879
2017	81.5	74.3–88.7	better	4,920
2018	86.0	76.3–95.7	better (rough estimate)	3,089
2019	89.7	73.6–105.8	no different (rough estimate)	1,275
2020	77.2	45.6–108.7	no different (rough estimate)	322

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 139,831 (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). Jaguar XJ 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/jaguar-xj/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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