CarCostCheck

Porsche 911 gt3

Reliability, running costs, and MOT data across 1 years from 401 real MOT tests.

Avg Pass Rate

98%

Total Tests

401

Best Year

2021 (98%)

Years Covered

1

About the Porsche 911 gt3

The Porsche 911 gt3 has been tested 401 times in 2026 MOT data across 1 model years (2021 to 2021), with an average pass rate of 98%. That's comfortably above the national average of 82%, making it a reliable choice. Available as petrol.

Best and Worst Years

The 2021 model is the most reliable with a 98% pass rate from 401 tests. The 2021 model has the lowest at 98%. With just a 0 point spread, the 911 gt3 is consistently reliable regardless of year.

Compared to the Porsche brand average of 92%, the 911 gt3 performs 6 points better, making it one of the more reliable options in the Porsche range.

Estimated Running Costs

Fuel (Petrol, 3996cc)
£1,592
Road Tax
£195
MOT Test
£55
Predicted Repairs
£200
Total per year£2,042
Per month£170/mo

Based on 7,400 miles/year, current fuel prices, and MOT pass rate data. Insurance not included.

Full 2021 details

How reliable is the Porsche 911 gt3?

vs national average+16% (82% avg)
vs Porsche brand average+6% (92% avg)
Best to worst year spread0 percentage points

Porsche 911 gt3 by Year

Click any year to see detailed running costs, reliability data, and comparisons with similar cars.

YearPass RateTestsAvg Mileage
202198%4016,367 mi

Porsche 911 gt3 Guides & Articles

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