MOT reliability

Porsche 997

Q: Is the Porsche 997 reliable?

Across 24 Porsche 997 vehicles in our MOT data, 82% pass the MOT (a 18% failure rate), with about 1.6 faults or advisories recorded per test.

Q: What is the average mileage of a Porsche 997?

The typical Porsche 997 in our data has covered around 46,187 miles.

24 vehicles · 200 completed MOT tests analysed

82%

MOT pass rate

Based on 24 Porsche 997 vehicles and 200 completed MOT tests, the Porsche 997 has an overall 82% pass rate, with an average recorded mileage of 46,187 miles.

Vehicles

200

MOT tests

1,923

Avg miles / year

1.6

Faults per test

Dangerous-fault share

Porsche 997 problem areas

Where faults occur most across all Porsche 997 MOT tests:

Other48%
Brakes25%
Tyres, wheels & suspension16%
Lamps & electrical9%
Emissions & nuisance7%
Identification & plates3%
Visibility3%
Steering3%

Porsche 997 pass rate by age

Age (years)	Tests	Pass rate
2	1	100%
3	9	89%
4	9	100%
5	16	62%
6	10	80%
7	10	90%
8	15	73%
9	9	89%
10	12	83%
11	12	83%
12	12	92%
13	19	89%
14	14	86%
15	17	71%
16	8	88%
17	5	100%
18	10	80%
19	6	50%
20	5	60%

Fuel types: Petrol (24)

Most common Porsche 997 MOT faults

These are the faults and advisories recorded most often across Porsche 997 MOT tests:

Oil leak, but not excessive (8.4.1 (a) (i)) (13 times)
Nearside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c)) (8 times)
Nearside Rear Tyre worn close to the legal limit (4.1.E.1) (7 times)
Offside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c)) (7 times)
Nearside Front Tyre worn close to the legal limit (4.1.E.1) (6 times)
Under-trays fitted obscuring some underside components (6 times)
Offside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c)) (6 times)
Offside Rear Lower Suspension arm ball joint has slight play (5.3.4 (a) (i)) (6 times)
Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (6 times)
Rear Brake pad(s) wearing thin (1.1.13 (a) (ii)) (5 times)
Front Registration plate deteriorated but not likely to be misread Cracked (0.1 (b)) (5 times)
Offside Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i)) (5 times)
Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) (4 times)
Nearside Headlamp aim too low (1.8) (4 times)
Play in steering rack inner joint(s) (4 times)

Porsche 997 pass rate by registration year

Year	Vehicles	Tests	Pass rate	Avg mileage
2011	1	8	100%	13,824
2010	3	17	88%	30,944
2009	1	2	50%	10,517
2008	3	11	82%	32,687
2007	5	13	100%	34,634
2006	5	75	71%	68,554
2005	5	73	86%	70,197
2001	1	1	100%	26,344

Porsche 997 reliability FAQ

Across 24 Porsche 997 vehicles in our MOT data, 82% pass the MOT (a 18% failure rate), with about 1.6 faults or advisories recorded per test.

The most frequently recorded Porsche 997 MOT issues are: Oil leak, but not excessive (8.4.1 (a) (i)); Nearside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c)); Nearside Rear Tyre worn close to the legal limit (4.1.E.1).

The typical Porsche 997 in our data has covered around 46,187 miles.

Compare the Porsche 997

See how the Porsche 997 stacks up against other Porsche models on MOT reliability:

997 vs 911 997 vs Boxster 997 vs Cayenne 997 vs Macan

Check a specific Porsche 997

Enter a registration to see that exact vehicle's full MOT history, advisories and recurring faults.

See all Porsche models · Learn about common MOT failures · what an MOT checks