PORSCHE CARRERA GT (1998)
Running costs, reliability data, and common problems from 42 real MOT tests.
Annual Cost
£3,107
£259/month
MOT Pass Rate
69%
Below Avg
Road Tax
£760
Based on CC/year
Insurance
Grp 35-50
5733cc Petrol
Proceed With Caution
69% pass rate, £3107/year to run. 13 points below average.
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Annual Running Costs
~30 mpg
Based on 5733cc
Higher estimate due to low pass rate
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.
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Reliability Verdict
Below average reliability. Budget extra for maintenance and repairs. That's 13 points below the national average of 82%. It falls below the PORSCHE brand average of 92%.
At 28 years old, 69% of PORSCHE CARRERA GTs from 1998 passed their MOT first time in 2026. That's based on 42 tests across the UK. The average mileage at this age is 96,268 miles.
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How Does It Compare?
Mileage Analysis
96,268
Average miles
207,200
Expected for age
The average 1998 PORSCHE CARRERA GT has 96,268 miles on the clock, which is significantly below the expected 207,200 miles for a 28-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.
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Best Year to Buy?
The most reliable year is the 2006 model with a 98% MOT pass rate, while the 2002 model has the lowest at 91%. The 1998 sits between the two at 69%.
PORSCHE CARRERA GT by Year
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About the 1998 PORSCHE CARRERA GT
The 1998 PORSCHE CARRERA GT is a luxury with a 5733cc petrol engine. 42 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It sits in the bottom 84% of 1998 cars for MOT pass rates.
With an average of 96,268 miles at 28 years old, PORSCHE CARRERA GT owners tend to use this car less than the typical driver. Very low mileage could mean the car has been garaged or used only for short trips, which can cause its own issues like battery drain and moisture buildup.
1998 PORSCHE CARRERA GT Fuel Costs
The 5733cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 1998 PORSCHE CARRERA GT?
Total estimated annual running cost is £3,107 (£259/month), broken down as £1592 fuel, £760 road tax, £55 MOT, and £700 predicted repairs. The higher repair estimate reflects the 69% MOT pass rate. Cars in this bracket tend to need work on suspension, brakes, and emissions components.
Buying a Used 1998 PORSCHE CARRERA GT
At 28 years old, the PORSCHE CARRERA GT is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. If you're flexible on year, the 2006 model has the highest pass rate at 98%. Note: with only 42 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
Based on the 1998 PORSCHE CARRERA GT's fuel type, age, and engine size, these are the most likely problem areas to check.
Timing Chain / Belt
Watch outAt 28 years old, check whether the timing belt has been replaced (typically due every 5-7 years or 60,000-100,000 miles). A snapped belt can destroy the engine.
Oil Consumption
Medium riskLarger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.
Rust and Corrosion
Watch outAt 10+ years, check wheel arches, sills, subframe, and brake lines for rust. Structural corrosion is an MOT failure. Prevention is far cheaper than repair.
Suspension Bushings
Watch outRubber suspension bushes harden and crack with age, causing knocking noises and vague handling. A full refresh costs £300-£800 depending on the car.
Clutch Wear
Medium riskWith an average of 96k miles, clutch replacement may be due (typical lifespan 60,000-100,000 miles). Budget £400-£800 for a new clutch kit.
Brake Discs and Pads
Medium riskHigh-mileage cars often need brake disc replacement, not just pads. A full set of discs and pads costs £200-£500 per axle.
Higher Than Average Failure Rate
Watch outWith a 69% MOT pass rate, this model fails more often than most. Budget for unexpected repairs and get a thorough pre-purchase inspection.
Service History
Low riskAlways request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.
Running Costs Compared
How the 1998 PORSCHE CARRERA GT stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| PORSCHE CARRERA GT(1998) | 69% | £1592 | £760 | Grp 35-50 | £3107 |
| MERCEDES CLK(2000) | 81% | £1592 | £250 | Grp 35-50 | £2247-£860 |
| JAGUAR XJ(1996) | 82% | £1592 | £250 | Grp 35-50 | £2247-£860 |
| ASTON MARTIN DB7(2000) | 89% | £1592 | £250 | Grp 35-50 | £2247-£860 |
| MERCEDES S-CLASS(1996) | 83% | £1592 | £250 | Grp 35-50 | £2247-£860 |
Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.
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