2020 Peugeot 308 MOT pass rate: 90.2% (9,321 tests)

2020-registered Peugeot 308s passed 90.2% of 9,321 MOT tests in 2023–2025 — broadly in line with same-age cars (89.9%). This is one of the strongest 308 years in the age-adjusted MOT ranking, although the individual car still matters more.

90.2%Pass rate, 2020 cars

100.3Age-adjusted index (100 = average)

9,321Tests analysed

29,355 miMedian mileage at test

91.5% / 86.9%Petrol vs diesel pass rate

Is the 2020 308 getting worse?

Pass rate of 2020-registered cars across recent test years:

Test year	Pass rate
2023	92.1% +1.3 vs same-age
2024	90.2% +0.3 vs same-age
2025	88.3% -0.6 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 2020 308

#	System	Defects recorded	Share
1	Tyres	563	36.1%
2	Lamps, reflectors and electrical equipment	355	22.8%
3	Brakes	343	22.0%
4	Visibility	66	4.2%
5	Noise, emissions and leaks	59	3.8%
6	Suspension	49	3.1%

All 308 years compared

Registration year	Tests	Pass rate	Vs same-age	Median mileage
2007	2,621	54.8%	-10.3 pts	102,797
2008	23,733	58.0%	-7.1 pts	100,337
2009	33,154	59.2%	-7.3 pts	98,853
2010	35,824	61.9%	-5.5 pts	95,425
2011	27,997	65.9%	-3.3 pts	92,585
2012	29,652	66.7%	-4.5 pts	91,960
2013	30,522	65.9%	-7.4 pts	85,612
2014	35,839	69.9%	-6.0 pts	80,931
2015	41,551	74.7%	-4.0 pts	76,175
2016	43,321	75.9%	-5.4 pts	67,271
2017	27,265	79.6%	-4.4 pts	57,930
2018	25,130	82.5%	-3.8 pts	48,925
2019	20,621	87.4%	-1.0 pts	38,825
2020 (this page)	9,321	90.2%	+0.3 pts	29,355

Weighing up which year to buy? See the full ranking: Peugeot 308 years to avoid.

Buying a 2020 308? 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 2020 Peugeot 308 reliable?

2020-registered examples passed 90.2% of their MOT tests (9,321 tests, 2023–2025), +0.3 points versus all UK cars registered in the same year. At roughly 6 years old with a median 29,355 miles, condition now varies car by car — always check the individual MOT history.

What mileage is too high for a 2020 308?

The median tested example shows 29,355 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.

Should I buy the petrol or diesel 2020 308?

In this cohort petrols pass 91.5% of tests against 86.9% for diesels. Mileage and use can explain part of that gap, so treat it as a reason to inspect DPF and emissions history, not a fuel-type verdict.

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.