How much does a 1992 PORSCHE 928 S cost to run?

Estimated annual running cost is £2,907 (£242/month), including £1592 fuel, £760 road tax, £55 MOT, and £500 predicted repairs.

What is the MOT pass rate for a 1992 PORSCHE 928 S?

The 1992 PORSCHE 928 S has a 72% MOT pass rate based on 58 tests in 2026. This ranks 133 out of 178 cars from 1992.

Which year PORSCHE 928 S is most reliable?

The 1990 PORSCHE 928 S has the highest MOT pass rate at 84%. The least reliable year is 1992 at 72%.

PORSCHE 928 S (1992)

Q: Is the 1992 PORSCHE 928 S reliable?

Average reliability. Expect some repairs as it ages. 72% of PORSCHE 928 Ss from 1992 passed their MOT first time in 2026, based on 58 tests. That's 10 points below the national average of 82%.

Q: What is the average mileage for a 1992 PORSCHE 928 S?

The average mileage for a 1992 PORSCHE 928 S is 118,583 miles, which is significantly below the expected 251,600 miles for a 34-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.

Running costs, reliability data, and common problems from 58 real MOT tests.

Annual Cost

£2,907

£242/month

MOT Pass Rate

72%

Average

Road Tax

£760

Based on CC/year

Insurance

Grp 35-50

4957cc Petrol

Check Carefully

72% pass rate, £2907/year to run. 10 points below average.

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Petrol4957cc34 years old58 tests119k miles avg

Annual Running Costs

Fuel (Petrol, 4957cc)

~30 mpg

£1,592

Road Tax

Based on 4957cc

£760

MOT Test

£55

Predicted Repairs

Higher estimate due to low pass rate

£500

Total per year£2,907

Per month£242/mo

Per week£56/wk

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

72% MOT pass rate(Average)

0%National avg: 82%100%

Average reliability. Expect some repairs as it ages. That's 10 points below the national average of 82%. It falls below the PORSCHE brand average of 92%.

At 34 years old, 72% of PORSCHE 928 Ss from 1992 passed their MOT first time in 2026. That's based on 58 tests across the UK. The average mileage at this age is 118,583 miles.

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How Does It Compare?

Rank among 1992 cars133th of 178(top 75%)

Rank among PORSCHE models273th of 276(top 99%)

vs national average-10%(82% avg)

vs 1992 cars average-5%(77% avg)

vs PORSCHE average-20%(92% avg)

Mileage Analysis

118,583

Average miles

251,600

Expected for age

The average 1992 PORSCHE 928 S has 118,583 miles on the clock, which is significantly below the expected 251,600 miles for a 34-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 1990 model with a 84% MOT pass rate, while the 1992 model has the lowest at 72%. Consider a different year if reliability is a priority.

PORSCHE 928 S by Year

Year	Pass Rate	Tests	Avg Mileage
1992	72%	58	118,583 mi
1991	81%	181	114,141 mi
1990	84%	125	115,960 mi

Similar Cars to Consider

MERCEDES SL

1994 · 4973cc Petrol

£2,247/year

88%

+16%

JAGUAR XJS

1990 · 5343cc Petrol

£2,247/year

82%

+10%

TVR CHIMAERA

1994 · 4988cc Petrol

£2,247/year

83%

+11%

MERCEDES 500

1991 · 4973cc Petrol

£2,247/year

87%

+15%

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About the 1992 PORSCHE 928 S

The 1992 PORSCHE 928 S is a luxury with a 4957cc petrol engine. 58 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. Among all cars from 1992, the average MOT pass rate is 77%, and this model falls short of that benchmark.

With an average of 118,583 miles at 34 years old, PORSCHE 928 S 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 S 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 S?

Total estimated annual running cost is £2,907 (£242/month), broken down as £1592 fuel, £760 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 72% pass rate. Keeping on top of servicing will help avoid surprises.

PORSCHE 928 S Reliability Trend

Older PORSCHE 928 Ss tend to have better MOT pass rates than newer ones, with an average decline of 8 percentage points across model years.

Buying a Used 1992 PORSCHE 928 S

At 34 years old, the PORSCHE 928 S 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. Note: with only 58 tests in our data, these figures should be treated as indicative rather than definitive.

Common Issues to Watch For

Based on the 1992 PORSCHE 928 S's fuel type, age, and engine size, these are the most likely problem areas to check.

Timing Chain / Belt

Watch out

At 34 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 risk

Larger 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 out

At 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 out

Rubber 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

Watch out

With an average of 119k 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 risk

High-mileage cars often need brake disc replacement, not just pads. A full set of discs and pads costs £200-£500 per axle.

Service History

Low risk

Always 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 1992 PORSCHE 928 S stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
PORSCHE 928 S(1992)	72%	£1592	£760	Grp 35-50	£2907
MERCEDES SL(1994)	88%	£1592	£250	Grp 35-50	£2247-£660
JAGUAR XJS(1990)	82%	£1592	£250	Grp 35-50	£2247-£660
TVR CHIMAERA(1994)	83%	£1592	£250	Grp 35-50	£2247-£660
MERCEDES 500(1991)	87%	£1592	£250	Grp 35-50	£2247-£660

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.