Most reliable Porsche: MOT failure rates ranked

Updated 05 September 2026.

3.6%

Porsche 718, the most reliable Porsche

The most reliable Porsche on MOT failure rate is the Porsche 718, at 3.6% failures across 5,171 tests.

Rank	Model	MOT failure rate	Tests
1	Porsche 718	3.6%	5,171
2	Porsche Macan	7.9%	208,570
3	Porsche Taycan	9.1%	31,759
4	Porsche Cayman	11.2%	188,582
5	Porsche Panamera	11.2%	69,909
6	Porsche 911	14.6%	1,015,318
7	Porsche Cayenne	15.4%	406,237
8	Porsche Carrera	17.1%	23,215
9	Porsche Boxster	17.2%	736,425
10	Porsche 968	20.9%	17,444
11	Porsche 928	24.0%	29,745
12	Porsche 944	27.7%	103,392
13	Porsche 924	30.4%	35,782

Questions and answers

What is the most reliable Porsche at MOT?

The most reliable Porsche on MOT failure rate is the Porsche 718, at 3.6% failures across 5,171 tests.

Which Porsche fails its MOT most often?

The Porsche 924 has the highest MOT failure rate of the Porsche range, at 30.4%.