CarCostCheck

PORSCHE 928 (1992)

Running costs, common problems, and reliability data based on 41 real MOT tests in 2024.

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MOT Pass Rate

90%

Total Tests (2024)

41

Avg Mileage

101,109 mi

Est. Annual Cost

£2,097

Is the 1992 PORSCHE 928 reliable?

Excellent reliability. Very few MOT failures. That's 8 points above the national average of 82%.

At 32 years old, 90% of PORSCHE 928s from 1992 passed their MOT first time in 2024. That's based on 41 tests across the UK. The average mileage at this age is 101,109 miles.

How does the 1992 PORSCHE 928 compare?

Rank among all 1992 cars20th out of 178(top 11%)
Rank among all PORSCHE models192th out of 276(top 70%)
vs national average+8% (82% avg)
vs 1992 cars average+13% (77% avg)
vs PORSCHE average-2% (92% avg)

Mileage Analysis

The average 1992 PORSCHE 928 has 101,109 miles on the clock, which is significantly below the expected 236,800 miles for a 32-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.

Best year to buy a PORSCHE 928?

The most reliable year is the 1993 model with a 96% MOT pass rate, while the 1995 model has the lowest at 80%. The 1992 sits between the two at 90%.

How much does a 1992 PORSCHE 928 cost to run?

⛽Fuel (Petrol, 4957cc)
£1,592
🏛️Road Tax
£250
🔧MOT Test
£55
🛠️Predicted Repairs
£200
Total per year£2,097
Per month£175/mo

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

PORSCHE 928 by Year

YearPass RateTestsAvg Mileage
199580%15368,198 mi
199491%7981,080 mi
199396%50102,665 mi
199290%41101,109 mi
199176%42127,119 mi
199088%5297,889 mi

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About the 1992 PORSCHE 928

The 1992 PORSCHE 928 is a luxury with a 4957cc petrol engine. 41 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. It ranks in the top 11% of all 1992 cars for reliability.

With an average of 101,109 miles at 32 years old, PORSCHE 928 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.

1992 PORSCHE 928 Fuel Costs

The 4957cc 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 1992 PORSCHE 928?

Total estimated annual running cost is £2,097 (£175/month), broken down as £1592 fuel, £250 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 90% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

PORSCHE 928 Reliability Trend

Older PORSCHE 928s tend to have better MOT pass rates than newer ones, with an average decline of 7 percentage points across model years.

Buying a Used 1992 PORSCHE 928

At 32 years old, the PORSCHE 928 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 1993 model has the highest pass rate at 96%. Note: with only 41 tests in our data, these figures should be treated as indicative rather than definitive.

Alternatives to the 1992 PORSCHE 928

The PORSCHE 928 is actually the most reliable option among similar petrol luxurys from this era. Here are comparable petrol cars with similar engines: