Toyota Prius+ 2015: MOT failure rate for its age

16.9% of 2,053 MOT tests of the Toyota Prius+ 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 98.4 (95% CI 88.1–108.7; 100 = normal for this model at that age): the 2015 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.

Toyota Prius+ built in 2015 at a glance
Measure	Value	Unit	Compared with	Years	Tests
Failed first time	16.9	%	all ages tested	2019–2024	2053
Index against this model at the same age (95% CI 88.1–108.7)	98.4	index	100 = normal for this model at that age	2019–2024	2053
Rank among this model's 9 build years	4	of 9	1 = fails least for its age	2019–2024	2053
Tested in 2024	504	tests	median 165,972 miles	2024	504

Built 2015 against Toyota Prius+ normal for the age: first-time MOT failure share at each age, age 4: 19.7% vs 12.4%; age 6: 13.1% vs 19.9%; age 7: 16.8% vs 19.6%; age 8: 16% vs 15.7%; age 9: 18.8% vs 17.7%. Axis from 0% to 20%. DVSA MOT bulk data, 2019–2024.

Check a 2015 Toyota Prius+ by registration · All Toyota Prius+ 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 Toyota Prius+ 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.

Toyota Prius+ 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	279 (rough estimate)	19.7	15.5–24.8	12.4	158.7
6	298 (rough estimate)	13.1	9.7–17.4	19.9	65.7
7	458 (rough estimate)	16.8	13.7–20.5	19.6	85.9
8	514	16	13–19.4	15.7	101.8
9	504	18.8	15.7–22.5	17.7	106.2

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 2,053 (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 Toyota Prius+?

The most common failure group on cars built in 2015 is lamps, reflectors and electrical equipment: 5.6 items per 100 first tests, against 7 across all build years of the Toyota Prius+. These counts are not age-adjusted: cars built in 2015 were tested at ages 4 to 9.

Failure items per 100 first tests, Toyota Prius+ built 2015 against the Toyota Prius+ 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	5.6	7	116
Suspension	5	4.8	103
Tyres	3.6	3	74
Visibility	2.2	2.2	45
Brakes	1.5	1.6	31

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 2,073 (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 9 published build years of the Toyota Prius+, 2015 ranks 4 (1 = fails least for its age). 2014: index 101.7. 2016: index 94.9.

Toyota Prius+ build years: index against the model at the same age (2019–2024)
Build year	Index (100 = normal)	95% interval	Verdict	Tests
2012	106.2	94.9–117.6	no different (rough estimate)	1,494
2013	106.9	98.5–115.2	no different (rough estimate)	2,888
2014	101.7	92.6–110.9	no different (rough estimate)	2,621
2015	98.4	88.1–108.7	no different (rough estimate)	2,053
2016	94.9	85.3–104.5	no different (rough estimate)	2,345
2017	81.0	68.0–94.0	better (rough estimate)	1,088
2018	117.0	100.5–133.4	worse (rough estimate)	1,174
2019	93.0	80.8–105.3	no different (rough estimate)	2,058
2020	130.8	84.8–176.9	no different (rough estimate)	224

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 15,945 (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). Toyota Prius+ 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/toyota-prius-plus/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.

Other pages for this model

Toyota Prius+ 2012 · Toyota Prius+ 2013 · Toyota Prius+ 2014 · Toyota Prius+ 2016 · Toyota Prius+ 2017 · Toyota Prius+ 2018 · Toyota Prius+ 2019 · Toyota Prius+ 2020 · Toyota Prius+ in Norway · Toyota Prius+ in Finland · Toyota Prius+ in the Netherlands · Toyota Prius+ by postcode area · Toyota Prius+ body, chassis and structure failures · Toyota Prius+ brakes failures · Toyota Prius+ lamps, reflectors and electrics failures · Toyota Prius+ steering failures · Toyota Prius+ suspension failures · Toyota Prius+ tyres failures · Toyota Prius+ visibility failures