2004 Toyota Yaris MOT pass rate: 64.3% (40,212 tests)

2004-registered Toyota Yariss passed 64.3% of 40,212 MOT tests in 2023–2025 — broadly in line with same-age cars (64.4%). This is one of the lower-scoring Yaris years after correcting for vehicle age — inspect the individual car carefully.

64.3%Pass rate, 2004 cars

100.0Age-adjusted index (100 = average)

40,212Tests analysed

90,475 miMedian mileage at test

64.4% / 62.6%Petrol vs diesel pass rate

Is the 2004 Yaris getting worse?

Pass rate of 2004-registered cars across recent test years:

Test year	Pass rate
2023	64.5% +0.6 vs same-age
2024	64.2% +0.1 vs same-age
2025	64.1% -1.2 vs same-age

The raw rate normally falls as cars age. The “vs same-age” figure compares this cohort with all UK cars registered in the same year, so normal ageing is not mistaken for a bad model year.

What fails on a 2004 Yaris

#	System	Defects recorded	Share
1	Lamps, reflectors and electrical equipment	17,172	32.5%
2	Brakes	11,147	21.1%
3	Suspension	9,884	18.7%
4	Visibility	3,746	7.1%
5	Body, chassis, structure	3,587	6.8%
6	Tyres	3,091	5.8%

All Yaris years compared

Registration year	Tests	Pass rate	Vs same-age	Median mileage
2001	21,019	65.4%	-1.2 pts	92,997
2002	26,807	67.0%	+1.3 pts	91,884
2003	34,295	65.1%	+0.0 pts	91,650
2004 (this page)	40,212	64.3%	-0.0 pts	90,475
2005	49,062	66.0%	+1.5 pts	88,710
2006	50,941	67.1%	+2.6 pts	93,305
2007	62,042	68.1%	+3.0 pts	91,646
2008	66,482	68.4%	+3.3 pts	90,150
2009	72,883	73.8%	+7.5 pts	80,247
2010	55,277	73.2%	+5.8 pts	77,749
2011	47,928	77.8%	+8.7 pts	70,883
2012	81,403	78.3%	+7.1 pts	67,552
2013	85,728	78.9%	+5.6 pts	62,423
2014	85,982	81.1%	+5.3 pts	56,308
2015	91,148	86.6%	+7.9 pts	50,738
2016	84,331	88.1%	+6.8 pts	43,580
2017	79,616	87.6%	+3.6 pts	37,174
2018	82,627	89.8%	+3.4 pts	31,977
2019	82,744	92.2%	+3.8 pts	25,437
2020	44,299	93.6%	+3.7 pts	20,190

Weighing up which year to buy? See the full ranking: Toyota Yaris years to avoid.

Buying a 2004 Yaris? Two checks first

Free MOT history checkThe exact car’s failures, advisories and mileage trail — sellers can’t edit it
Topdon OBD2 scannersTopdon diagnostic scanners with full-system readouts
XTOOL diagnostic toolsXTOOL code readers for petrol and diesel cars
Autel UK testersAutel professional-grade diagnostic testers

FAQs

Is a 2004 Toyota Yaris reliable?

2004-registered examples passed 64.3% of their MOT tests (40,212 tests, 2023–2025), -0.0 points versus all UK cars registered in the same year. At roughly 22 years old with a median 90,475 miles, condition now varies car by car — always check the individual MOT history.

What mileage is too high for a 2004 Yaris?

The median tested example shows 90,475 miles. Anything far beyond that isn't automatically bad — a motorway-mile car with consistent service records often beats a low-mileage school-run car — but price accordingly and scrutinise the mileage trail for gaps or drops.

Source: DVSA Anonymised MOT tests and results, 2023–2025 extracts (96 million Class 4 initial tests; retests excluded). Only vehicles old enough for a routine first MOT are included. Age-adjusted figures compare the model-year cohort with all vehicles of the same registration year tested in the same calendar year. Contains public sector information licensed under OGL v3.0.