CarCostCheck

MERCEDES S-CLASS (1994)

Running costs, common problems, and reliability data based on 140 real MOT tests in 2024.

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MOT Pass Rate

92%

Total Tests (2024)

140

Avg Mileage

106,787 mi

Est. Annual Cost

£2,097

Is the 1994 MERCEDES S-CLASS reliable?

Excellent reliability. Very few MOT failures. That's 10 points above the national average of 82%. It also outperforms the MERCEDES brand average of 87%.

At 30 years old, 92% of MERCEDES S-CLASSs from 1994 passed their MOT first time in 2024. That's based on 140 tests across the UK. The average mileage at this age is 106,787 miles.

How does the 1994 MERCEDES S-CLASS compare?

Rank among all 1994 cars10th out of 212(top 5%)
Rank among all MERCEDES models508th out of 1,408(top 36%)
vs national average+10% (82% avg)
vs 1994 cars average+16% (76% avg)
vs MERCEDES average+5% (87% avg)

Mileage Analysis

The average 1994 MERCEDES S-CLASS has 106,787 miles on the clock, which is significantly below the expected 222,000 miles for a 30-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 MERCEDES S-CLASS?

The most reliable year is the 2020 model with a 95% MOT pass rate, while the 1992 model has the lowest at 72%. The 1994 sits between the two at 92%.

How much does a 1994 MERCEDES S-CLASS cost to run?

⛽Fuel (Petrol, 2799cc)
£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.

MERCEDES S-CLASS by Year

YearPass RateTestsAvg Mileage
202191%16432,036 mi
202095%54043,972 mi
201994%5,92167,860 mi
201894%6,51875,456 mi
201793%5,99073,988 mi
201691%6,81974,260 mi
201592%5,51387,325 mi
201492%3,91595,545 mi
201389%2,145108,065 mi
201288%2,817100,420 mi
201187%2,202117,628 mi
201085%2,001110,934 mi
200982%1,990114,274 mi
200884%2,232110,584 mi
200784%2,940117,418 mi
200687%2,334111,043 mi
200584%1,301132,014 mi
200482%1,158124,020 mi
200382%1,227120,882 mi
200279%720115,052 mi
200179%735107,381 mi
200081%562102,703 mi
199978%43498,447 mi
199881%522111,371 mi
199786%373107,182 mi
199683%348109,185 mi
199586%286111,087 mi
199492%140106,787 mi
199376%49112,335 mi
199272%121119,350 mi
199192%118120,508 mi
199087%125142,121 mi

Checking a specific MERCEDES S-CLASS?

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About the 1994 MERCEDES S-CLASS

The 1994 MERCEDES S-CLASS is a large car with a 2799cc petrol engine. 140 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. It ranks in the top 5% of all 1994 cars for reliability.

With an average of 106,787 miles at 30 years old, MERCEDES S-CLASS 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.

1994 MERCEDES S-CLASS Fuel Costs

The 2799cc 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 1994 MERCEDES S-CLASS?

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 92% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

MERCEDES S-CLASS Reliability Trend

Newer MERCEDES S-CLASSs show better MOT pass rates than older ones, with an average improvement of 6 percentage points.

Buying a Used 1994 MERCEDES S-CLASS

At 30 years old, the MERCEDES S-CLASS 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 2020 model has the highest pass rate at 95%.

Alternatives to the 1994 MERCEDES S-CLASS

The MERCEDES S-CLASS is actually the most reliable option among similar petrol large cars from this era. Here are comparable petrol cars with similar engines: