Most reliable Mercedes-Benz: MOT failure rates ranked

Updated 05 September 2026.

6.8%

Mercedes-Benz Gt, the most reliable Mercedes-Benz

The most reliable Mercedes-Benz on MOT failure rate is the Mercedes-Benz Gt, at 6.8% failures across 9,743 tests.

Rank	Model	MOT failure rate	Tests
1	Mercedes-Benz Gt	6.8%	9,743
2	Mercedes-Benz B-Class	9.0%	42,121
3	Mercedes-Benz G-Class	9.0%	7,503
4	Mercedes-Benz Glb	9.3%	34,726
5	Mercedes-Benz Eqa	10.0%	25,885
6	Mercedes-Benz Gle	10.7%	197,720
7	Mercedes-Benz Glc	10.9%	501,289
8	Mercedes-Benz Slc	11.1%	65,609
9	Mercedes-Benz Gls	11.3%	18,275
10	Mercedes-Benz A180	11.5%	10,446
11	Mercedes-Benz A-Class	11.6%	566,672
12	Mercedes-Benz Evito	11.6%	7,656
13	Mercedes-Benz Amg	11.9%	28,510
14	Mercedes-Benz Gla	12.2%	601,225
15	Mercedes-Benz Eqb	12.9%	7,140

Questions and answers

What is the most reliable Mercedes-Benz at MOT?

The most reliable Mercedes-Benz on MOT failure rate is the Mercedes-Benz Gt, at 6.8% failures across 9,743 tests.

Which Mercedes-Benz fails its MOT most often?

The Mercedes-Benz 308 has the highest MOT failure rate of the Mercedes-Benz range, at 38.7%.