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MERCEDES 500 (1992)

Running costs, reliability data, and common problems from 254 real MOT tests.

Annual Cost

£2,757

£230/month

MOT Pass Rate

81%

Good

Road Tax

£760

Based on CC/year

Insurance

Grp 35-50

4973cc Petrol

Solid Option

81% pass rate, £2757/year to run. Close to the national average.

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Petrol4973cc34 years old254 tests96k miles avg

Annual Running Costs

Fuel (Petrol, 4973cc)

~30 mpg

£1,592
Road Tax

Based on 4973cc

£760
MOT Test
£55
Predicted Repairs
£350
Total per year£2,757
Per month£230/mo
Per week£53/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

81% MOT pass rate(Good)
0%National avg: 82%100%

Good reliability. Occasional issues but generally solid. That's close to the national average of 82%. It falls below the MERCEDES brand average of 87%.

At 34 years old, 81% of MERCEDES 500s from 1992 passed their MOT first time in 2026. That's based on 254 tests across the UK. The average mileage at this age is 96,452 miles.

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How Does It Compare?

Rank among 1992 cars66th of 178(top 37%)
Rank among MERCEDES models1054th of 1,408(top 75%)
vs national average-1%(82% avg)
vs 1992 cars average+4%(77% avg)
vs MERCEDES average-6%(87% avg)

Mileage Analysis

96,452

Average miles

vs

251,600

Expected for age

The average 1992 MERCEDES 500 has 96,452 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 1991 model with a 87% MOT pass rate, while the 1992 model has the lowest at 81%. Consider a different year if reliability is a priority.

MERCEDES 500 by Year

YearPass RateTestsAvg Mileage
199385%324106,200 mi
199281%25496,452 mi
199187%35694,548 mi
199085%284108,828 mi

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About the 1992 MERCEDES 500

The 1992 MERCEDES 500 is a performance with a 4973cc petrol engine. 254 of these vehicles were MOT tested in 2026, making it a less common model in the UK market. Among all cars from 1992, the average MOT pass rate is 77%, and this model beats that benchmark.

With an average of 96,452 miles at 34 years old, MERCEDES 500 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 MERCEDES 500 Fuel Costs

The 4973cc 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 MERCEDES 500?

Total estimated annual running cost is £2,757 230/month), broken down as £1592 fuel, £760 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 81% pass rate. Keeping on top of servicing will help avoid surprises.

MERCEDES 500 Reliability Trend

The MERCEDES 500 has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.

Buying a Used 1992 MERCEDES 500

At 34 years old, the MERCEDES 500 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.

Common Issues to Watch For

Based on the 1992 MERCEDES 500'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

Medium risk

With 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 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 MERCEDES 500 stacks up against similar cars for annual running costs, insurance, and tax.

CarPass RateFuel/yrTax/yrInsuranceTotal/yr
MERCEDES 500(1992)81%£1592£760Grp 35-50£2757
MERCEDES SL(1994)88%£1592£250Grp 35-50£2247-£510
JAGUAR XJS(1990)82%£1592£250Grp 35-50£2247-£510
TVR CHIMAERA(1994)83%£1592£250Grp 35-50£2247-£510
JAGUAR XJ(1990)86%£1592£250Grp 35-50£2247-£510

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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Related Guides

In-depth articles relevant to the Mercedes 500.

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