CarCostCheck

PORSCHE 911 (1998)

Running costs, common problems, and reliability data based on 3,337 real MOT tests in 2024.

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MOT Pass Rate

85%

Total Tests (2024)

3,337

Avg Mileage

99,008 mi

Est. Annual Cost

£2,247

Is the 1998 PORSCHE 911 reliable?

Good reliability. Occasional issues but generally solid. That's close to the national average of 82%. It falls below the PORSCHE brand average of 92%.

At 26 years old, 85% of PORSCHE 911s from 1998 passed their MOT first time in 2024. That's based on 3,337 tests across the UK. The average mileage at this age is 99,008 miles.

How does the 1998 PORSCHE 911 compare?

Rank among all 1998 cars56th out of 340(top 16%)
Rank among all PORSCHE models237th out of 276(top 86%)
vs national average+3% (82% avg)
vs 1998 cars average+10% (75% avg)
vs PORSCHE average-7% (92% avg)

Mileage Analysis

The average 1998 PORSCHE 911 has 99,008 miles on the clock, which is below the expected 192,400 miles for a 26-year-old car. This suggests lighter use than average, which generally means less wear on major components.

Best year to buy a PORSCHE 911?

The most reliable year is the 2021 model with a 100% MOT pass rate, while the 1998 model has the lowest at 85%. Consider a different year if reliability is a priority.

How much does a 1998 PORSCHE 911 cost to run?

⛽Fuel (Petrol, 3596cc)
£1,592
🏛️Road Tax
£250
🔧MOT Test
£55
🛠️Predicted Repairs
£350
Total per year£2,247
Per month£187/mo

Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.

PORSCHE 911 by Year

YearPass RateTestsAvg Mileage
2021100%7211,708 mi
202097%2,36617,049 mi
201997%7,18820,907 mi
201896%7,62318,989 mi
201797%6,20026,067 mi
201697%5,52428,111 mi
201597%4,95032,698 mi
201496%4,80632,843 mi
201396%3,53543,937 mi
201295%4,25350,959 mi
201195%2,58043,837 mi
201094%3,65649,709 mi
200992%3,05559,885 mi
200892%4,21658,132 mi
200790%5,36662,566 mi
200690%6,18470,206 mi
200590%5,98673,824 mi
200488%5,19174,425 mi
200387%5,16882,296 mi
200286%4,97284,310 mi
200188%2,88587,628 mi
200086%2,09990,453 mi
199987%3,66894,086 mi
199885%3,33799,008 mi
199790%2,10376,331 mi
199691%2,65180,487 mi
199589%1,83180,965 mi
199491%1,47395,559 mi
199391%69889,736 mi
199294%61181,375 mi
199191%92981,480 mi
199091%1,88894,950 mi

Checking a specific PORSCHE 911?

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About the 1998 PORSCHE 911

The 1998 PORSCHE 911 is a luxury with a 3596cc petrol engine. 3,337 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. It ranks in the top 16% of all 1998 cars for reliability.

With an average of 99,008 miles at 26 years old, PORSCHE 911 owners tend to use this car less than the typical driver.

1998 PORSCHE 911 Fuel Costs

The 3596cc 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 911?

Total estimated annual running cost is £2,247 (£187/month), broken down as £1592 fuel, £250 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 85% pass rate. Keeping on top of servicing will help avoid surprises.

PORSCHE 911 Reliability Trend

Newer PORSCHE 911s show better MOT pass rates than older ones, with an average improvement of 6 percentage points.

Buying a Used 1998 PORSCHE 911

At 26 years old, the PORSCHE 911 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.

Alternatives to the 1998 PORSCHE 911

The PORSCHE 911 is actually the most reliable option among similar petrol luxurys from this era. Here are comparable petrol cars with similar engines: