MERCEDES 300 (1992)
Running costs, common problems, and reliability data based on 1,096 real MOT tests in 2024.
MOT Pass Rate
83%
Total Tests (2024)
1,096
Avg Mileage
131,403 mi
Est. Annual Cost
£2,247
Is the 1992 MERCEDES 300 reliable?
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 32 years old, 83% of MERCEDES 300s from 1992 passed their MOT first time in 2024. That's based on 1,096 tests across the UK. The average mileage at this age is 131,403 miles.
How does the 1992 MERCEDES 300 compare?
Mileage Analysis
The average 1992 MERCEDES 300 has 131,403 miles on the clock, which is below the expected 236,800 miles for a 32-year-old car. This suggests lighter use than average, which generally means less wear on major components.
Best year to buy a MERCEDES 300?
The most reliable year is the 1990 model with a 84% MOT pass rate, while the 1991 model has the lowest at 81%. The 1992 sits between the two at 83%.
How much does a 1992 MERCEDES 300 cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
MERCEDES 300 by Year
Checking a specific MERCEDES 300?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 1992 MERCEDES 300
The 1992 MERCEDES 300 is a large car with a 2996cc petrol engine. 1,096 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. Among all cars from 1992, the average MOT pass rate is 77%, and this model beats that benchmark.
With an average of 131,403 miles at 32 years old, MERCEDES 300 owners tend to use this car less than the typical driver.
1992 MERCEDES 300 Fuel Costs
The 2996cc 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 300?
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 83% pass rate. Keeping on top of servicing will help avoid surprises.
MERCEDES 300 Reliability Trend
The MERCEDES 300 has maintained consistent MOT pass rates across model years, varying by only 0 percentage points.
Buying a Used 1992 MERCEDES 300
At 32 years old, the MERCEDES 300 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 1990 model has the highest pass rate at 84%.
Alternatives to the 1992 MERCEDES 300
If reliability is your priority, there are 4 similar cars with a higher MOT pass rate. Here are comparable petrol cars with similar engines:
- PORSCHE 911 (1991) 91% pass rate (+8%) from 929 tests
- PORSCHE 944 (1990) 85% pass rate (+2%) from 914 tests
- PORSCHE 968 (1994) 88% pass rate (+5%) from 642 tests
- MERCEDES SL (1993) 88% pass rate (+5%) from 462 tests