MERCEDES UNCLASSIFIED (1999)
Running costs, common problems, and reliability data based on 223 real MOT tests in 2024.
MOT Pass Rate
78%
Total Tests (2024)
223
Avg Mileage
144,511 mi
Est. Annual Cost
£2,397
Is the 1999 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 25 years old, 78% of MERCEDES UNCLASSIFIEDs from 1999 passed their MOT first time in 2024. That's based on 223 tests across the UK. The average mileage at this age is 144,511 miles.
How does the 1999 MERCEDES UNCLASSIFIED compare?
Mileage Analysis
The average 1999 MERCEDES UNCLASSIFIED has 144,511 miles on the clock, which is below the expected 185,000 miles for a 25-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 1999 sits between the two at 78%.
How much does a 1999 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 1999 MERCEDES UNCLASSIFIED
The 1999 MERCEDES UNCLASSIFIED is a performance with a 5461cc petrol engine. 223 of these vehicles were MOT tested in 2024, making it a less common model in the UK market. Among all cars from 1999, the average MOT pass rate is 75%, and this model beats that benchmark.
With an average of 144,511 miles at 25 years old, MERCEDES UNCLASSIFIED owners tend to use this car less than the typical driver.
1999 MERCEDES UNCLASSIFIED Fuel Costs
The 5461cc 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 1999 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 78% 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 1999 MERCEDES UNCLASSIFIED
At 25 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 1999 MERCEDES UNCLASSIFIED
If reliability is your priority, there are 3 similar cars with a higher MOT pass rate. Here are comparable petrol cars with similar engines:
- MERCEDES SL (1997) 87% pass rate (+9%) from 2,117 tests
- MERCEDES CLK (2000) 81% pass rate (+3%) from 2,099 tests
- MERCEDES ML (2001) 77% pass rate (-1%) from 1,002 tests
- ASTON MARTIN DB7 (2001) 89% pass rate (+11%) from 509 tests