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?
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?
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
| Year | Pass Rate | Tests | Avg Mileage |
|---|---|---|---|
| 2021 | 96% | 270 | 14,108 mi |
| 2020 | 93% | 237 | 17,059 mi |
| 2019 | 95% | 176 | 25,080 mi |
| 2018 | 92% | 202 | 40,291 mi |
| 2017 | 91% | 200 | 39,620 mi |
| 2016 | 87% | 326 | 45,907 mi |
| 2015 | 91% | 252 | 72,531 mi |
| 2014 | 86% | 289 | 83,046 mi |
| 2013 | 89% | 245 | 52,132 mi |
| 2012 | 89% | 185 | 66,863 mi |
| 2011 | 90% | 126 | 63,066 mi |
| 2010 | 92% | 98 | 94,655 mi |
| 2009 | 79% | 174 | 100,957 mi |
| 2008 | 79% | 354 | 111,482 mi |
| 2007 | 81% | 259 | 105,351 mi |
| 2006 | 81% | 240 | 95,112 mi |
| 2005 | 79% | 273 | 101,492 mi |
| 2004 | 79% | 298 | 91,119 mi |
| 2003 | 73% | 178 | 102,840 mi |
| 2002 | 84% | 214 | 129,941 mi |
| 2001 | 73% | 107 | 121,123 mi |
| 2000 | 73% | 195 | 116,472 mi |
| 1999 | 78% | 223 | 144,511 mi |
| 1998 | 81% | 155 | 139,571 mi |
| 1997 | 66% | 65 | 104,116 mi |
| 1996 | 66% | 101 | 175,170 mi |
| 1995 | 78% | 45 | 212,804 mi |
| 1994 | 74% | 86 | 85,110 mi |
| 1993 | 89% | 47 | 159,142 mi |
| 1992 | 60% | 40 | 117,020 mi |
| 1991 | 73% | 33 | 102,932 mi |
| 1990 | 83% | 58 | 95,507 mi |
Checking a specific MERCEDES UNCLASSIFIED?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
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:
- LAND ROVER FREELANDER (2006) 70% pass rate (-9%) from 12,591 tests
- MERCEDES E (2004) 78% pass rate (-1%) from 8,333 tests
- PORSCHE BOXSTER (2005) 86% pass rate (+7%) from 6,992 tests
- BMW X3 (2006) 78% pass rate (-1%) from 6,611 tests