CarCostCheck

MERCEDES UNCLASSIFIED (2004)

Running costs, common problems, and reliability data based on 298 real MOT tests in 2024.

MOT Pass Rate

79%

Total Tests (2024)

298

Avg Mileage

91,119 mi

Est. Annual Cost

£2,397

Is the 2004 MERCEDES UNCLASSIFIED reliable?

Average reliability. Expect some repairs as it ages. That's close to the national average of 82%. It falls below the MERCEDES brand average of 87%.

At 20 years old, 79% of MERCEDES UNCLASSIFIEDs from 2004 passed their MOT first time in 2024. That's based on 298 tests across the UK. The average mileage at this age is 91,119 miles.

How does the 2004 MERCEDES UNCLASSIFIED compare?

Rank among all 2004 cars139th out of 491(top 28%)
Rank among all MERCEDES models1131th out of 1,408(top 80%)
vs national average-3% (82% avg)
vs 2004 cars average+7% (72% avg)
vs MERCEDES average-8% (87% avg)

Mileage Analysis

The average 2004 MERCEDES UNCLASSIFIED has 91,119 miles on the clock, which is below the expected 148,000 miles for a 20-year-old car. This suggests lighter use than average, which generally means less wear on major components.

Best year to buy a MERCEDES UNCLASSIFIED?

The most reliable year is the 2021 model with a 96% MOT pass rate, while the 1997 model has the lowest at 66%. The 2004 sits between the two at 79%.

How much does a 2004 MERCEDES UNCLASSIFIED cost to run?

Fuel (Petrol, 3190cc)
£1,592
🏛️Road Tax
£250
🔧MOT Test
£55
🛠️Predicted Repairs
£500
Total per year£2,397
Per month£200/mo

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

MERCEDES UNCLASSIFIED by Year

YearPass RateTestsAvg Mileage
202196%27014,108 mi
202093%23717,059 mi
201995%17625,080 mi
201892%20240,291 mi
201791%20039,620 mi
201687%32645,907 mi
201591%25272,531 mi
201486%28983,046 mi
201389%24552,132 mi
201289%18566,863 mi
201190%12663,066 mi
201092%9894,655 mi
200979%174100,957 mi
200879%354111,482 mi
200781%259105,351 mi
200681%24095,112 mi
200579%273101,492 mi
200479%29891,119 mi
200373%178102,840 mi
200284%214129,941 mi
200173%107121,123 mi
200073%195116,472 mi
199978%223144,511 mi
199881%155139,571 mi
199766%65104,116 mi
199666%101175,170 mi
199578%45212,804 mi
199474%8685,110 mi
199389%47159,142 mi
199260%40117,020 mi
199173%33102,932 mi
199083%5895,507 mi

Checking a specific MERCEDES UNCLASSIFIED?

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About the 2004 MERCEDES UNCLASSIFIED

The 2004 MERCEDES UNCLASSIFIED is a performance with a 3190cc petrol engine. 298 of these vehicles were MOT tested in 2024, making it a less common model in the UK market. Among all cars from 2004, the average MOT pass rate is 72%, and this model beats that benchmark.

With an average of 91,119 miles at 20 years old, MERCEDES UNCLASSIFIED owners tend to use this car less than the typical driver.

2004 MERCEDES UNCLASSIFIED Fuel Costs

The 3190cc 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 2004 MERCEDES UNCLASSIFIED?

Total estimated annual running cost is £2,397 200/month), broken down as £1592 fuel, £250 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 79% pass rate. Keeping on top of servicing will help avoid surprises.

MERCEDES UNCLASSIFIED Reliability Trend

Newer MERCEDES UNCLASSIFIEDs show better MOT pass rates than older ones, with an average improvement of 13 percentage points.

Buying a Used 2004 MERCEDES UNCLASSIFIED

At 20 years old, the MERCEDES UNCLASSIFIED 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 2021 model has the highest pass rate at 96%.

Alternatives to the 2004 MERCEDES UNCLASSIFIED

If reliability is your priority, there's one similar car with a higher MOT pass rate. Here are comparable petrol cars with similar engines: