Mazda 3: 68% pass.

102,185 tests of cars aged 3 and over passed first time 68% of the time in 2025. For cars of the same ages, 70% would be expected: 2 points worse than that.

How it does as it ages.

01 / By age

Source: Anonymised MOT tests and results (Driver and Vehicle Standards Agency) Checked 4 Nov 2026, 13:37

Diesel
Age of car	Pass first time	All cars this age	Fixed at the station	Failed	Tests
5 years	86%	84%	3%	12%	195
6 years	84%	82%	2%	14%	444
7 years	72%	79%	3%	25%	855
8 years	69%	76%	4%	27%	1,490
9 years	70%	73%	3%	26%	2,067
10 years	68%	70%	3%	29%	1,933
11 years	67%	67%	4%	29%	1,229
12 years	61%	64%	6%	33%	1,418
13 years	60%	62%	7%	33%	1,085
14 years	54%	60%	9%	36%	1,129
15 years	54%	58%	9%	36%	1,131
16 years	52%	57%	8%	40%	320
17 years	54%	57%	9%	36%	138
18 years	50%	57%	4%	46%	50
19 years	58%	57%	6%	35%	31

Petrol
Age of car	Pass first time	All cars this age	Fixed at the station	Failed	Tests
3 years	90%	88%	3%	7%	3,512
4 years	88%	86%	3%	9%	3,946
5 years	87%	84%	3%	10%	4,334
6 years	85%	82%	3%	13%	5,223
7 years	77%	79%	3%	20%	6,254
8 years	75%	76%	3%	23%	7,800
9 years	72%	73%	3%	25%	8,646
10 years	70%	70%	3%	27%	8,232
11 years	69%	67%	4%	27%	5,064
12 years	67%	64%	6%	27%	3,272
13 years	59%	62%	7%	33%	3,708
14 years	57%	60%	8%	35%	5,402
15 years	58%	58%	8%	33%	6,056
16 years	53%	57%	10%	38%	5,426
17 years	52%	57%	11%	38%	4,554
18 years	51%	57%	11%	38%	3,462
19 years	49%	57%	10%	40%	2,360
20 years	48%	57%	10%	42%	1,183

Ages with fewer than 30 tests are left out. "All cars this age" is every make and model at that age, so you can see whether this one does better or worse than most.

A pass rate is the share of normal MOT tests a car passed first time, with no repair needed at the test station. A car that failed and was fixed on the spot is counted separately. Retests, aborted tests and other vehicles are left out.
The figures say how often cars of a kind pass, not how reliable or safe they are. Cars that are looked after better, or that are driven fewer miles, pass more often, and that differs by model. Groups of fewer than 30 tests are left out.
Make and model names are as DVSA records them, and a model can appear under more than one name.

More on Mazda and costs.

02 / Related

Data sources

Anonymised MOT tests and results (Driver and Vehicle Standards Agency). Contains public sector information licensed under the Open Government Licence v3.0. MOT test results for cars, counted by make, model and age from DVSA's anonymised data. The counts are ours; DVSA does not endorse them.