Car statistics by year
2004 Mercedes-Benz SLK-Class
Mercedes-Benz SLK-Class cars first registered in 2004: how they did at their 2025 MOT, what failed them, how far they have been driven and how many are still on the road. Compared with every car first registered in 2004, so like is set against like.
- MOT first-time pass rate, 2025 66.2% All 2004 cars 57.9%
- Typical mileage at the MOT 81,800 miles; all 2004 cars 101,100
- Left at the end of 2025 3,097 77.6% of the 3,990 at the end of 2014
- Tests finding a dangerous defect 6.8% All 2004 cars 9.6%
- Tests with an advisory 58.9% All 2004 cars 70.0%
- MOT tests in 2025 2,761 normal tests in Great Britain
How do 2004 Mercedes-Benz SLK-Classes do at their MOT?
In 2025, at about 21 years old, 66.2% of 2004 Mercedes-Benz SLK-Class MOT tests were passed first time, against 57.9% for all cars first registered in 2004. 2004 Mercedes-Benz SLK-Classes did better than average for their age, by 8.3 points. A year earlier the same cars passed 65.0% of the time (all 2004 cars 56.5%).
MOT pass rate by year of first registration: Mercedes-Benz SLK-Class vs all cars
Each pair of bars is one year of first registration, tested in 2025. Older cars pass less often, so compare each Mercedes-Benz SLK-Class bar with the all-cars bar beside it.
| First registered | Mercedes-Benz SLK-Class | All cars |
|---|---|---|
| ’98 | 70.3% | 67.1% |
| ’99 | 70.9% | 65.4% |
| ’00 | 69.5% | 63.1% |
| ’01 | 70.8% | 61.5% |
| ’02 | 71.1% | 59.7% |
| ’03 | 67.9% | 58.9% |
| ’04 | 66.2% | 57.9% |
| ’05 | 67.9% | 57.7% |
| ’06 | 67.0% | 56.9% |
| ’07 | 67.3% | 57.3% |
| ’08 | 67.9% | 57.0% |
| ’09 | 69.3% | 58.2% |
Source:DVSA,UK Motoring analysis 2025 Updated
Most common MOT failures on the 2004 Mercedes-Benz SLK-Class
Coil spring: fractured or broken was the most common single reason a 2004 Mercedes-Benz SLK-Class failed, on 17.5% of about 900 failed tests. By area of the car, suspension failed most often (42.6% of failed tests; all 2004 cars 38.7%). 6.8% of tests found at least one dangerous defect, against 9.6% for all cars first registered in 2004. A failed test can have several defects, so shares add up to more than 100%.
Most common reasons for failure
Share of failed tests with each defect. The same fault on any wheel or side counts once.
| Defect | Share of failed tests |
|---|---|
| Coil spring: fractured or broken Suspension | 17.5% |
| Suspension arms: ball joint excessively worn Suspension | 10.7% |
| Steering rack: gaiter missing or no longer prevents the ingress of dirt Steering | 10.2% |
| Malfunction indicator lamp: inoperative or indicates a malfunction Noise, emissions and leaks | 8.4% |
| Suspension arms: pin or bush excessively worn Suspension | 6.8% |
| Headlamp aim: projected beam image is obviously incorrect Lamps, reflectors and electrical equipment | 6.3% |
| Parking brake efficiency below requirements Brakes | 5.8% |
| Position lamp: not working Lamps, reflectors and electrical equipment | 5.8% |
| Sub-frame: corroded and seriously weakened Suspension | 5.7% |
| Stop lamp: not working Lamps, reflectors and electrical equipment | 5.6% |
Source:DVSA,UK Motoring analysis 2025 Updated
Failure categories: Mercedes-Benz SLK-Class vs all 2004 cars
The marker shows the share for all cars first registered the same year.
| Category | Share of failed tests |
|---|---|
| Suspension | 42.6% |
| Lamps, reflectors and electrical equipment | 34.9% |
| Brakes | 24.8% |
| Tyres | 15.5% |
| Steering | 15.3% |
| Noise, emissions and leaks | 11.8% |
| Visibility | 11.3% |
| Body, chassis, structure | 6.4% |
Source:DVSA,UK Motoring analysis 2025 Updated
Most common MOT advisories on the 2004 Mercedes-Benz SLK-Class
An advisory is something the tester noticed that did not fail the test but may need work soon. 58.9% of 2004 Mercedes-Benz SLK-Class tests had at least one (all 2004 cars 70.0%). These are the things to check on one you are thinking of buying.
Most common advisories
| Advisory | Share of tests |
|---|---|
| Rigid brake pipes: corroded, covered in grease or other material Brakes | 15.1% |
| Tread depth: worn close to legal limit or worn on edge Tyres | 14.4% |
| Tyres: slightly damaged or cracking or perishing Tyres | 9.5% |
| Engine oil leak, but not excessive Noise, emissions and leaks | 7.9% |
| Brake discs: worn, pitted or scored, but not seriously weakened Brakes | 7.1% |
| Sub-frame: corroded but not seriously weakened Suspension | 6.2% |
| Suspension arms: pin or bush worn but not resulting in excessive movement Suspension | 5.5% |
| Wheel bearings: slight play Suspension | 5.4% |
| Brake pads: wearing thin Brakes | 5.1% |
| Suspension arms: ball joint has slight play Suspension | 4.5% |
Source:DVSA,UK Motoring analysis 2025 Updated
What mileage is normal for a 2004 Mercedes-Benz SLK-Class?
Half of the 2004 Mercedes-Benz SLK-Classes tested in 2025 had covered fewer than 81,800 miles. A quarter had covered fewer than 60,500 and a quarter more than 103,600. For all cars first registered in 2004, the middle figure was 101,100 miles, so 2004 Mercedes-Benz SLK-Classes have been driven 19.1% less far than average.
Mileage at the 2025 MOT
Odometer readings at each car’s latest MOT of the year. The bar covers the middle half of cars; the line the middle 80%.
| 10% | 25% | Median | 75% | 90% | Cars | |
|---|---|---|---|---|---|---|
| 2004 Mercedes-Benz SLK-Class | 42,100 | 60,500 | 81,800 | 103,600 | 124,100 | 2,625 |
| All 2004 cars | 51,600 | 73,300 | 101,100 | 133,200 | 166,100 | 309,169 |
Source:DVSA,UK Motoring analysis 2025 Updated
How many 2004 Mercedes-Benz SLK-Classes are left?
At the end of 2014, 3,990 2004 Mercedes-Benz SLK-Classes were on the DVLA record in the United Kingdom (these counts start in 2014). By the end of 2025, 3,097 were: 2,137 licensed and 960 declared off the road (SORN). That is 77.6% still on the record, against 25.3% for all cars first registered in 2004.
Share still on the record since 2014
Cars licensed or SORN at each year end, as a share of the number at the end of 2014. Cars scrapped or exported leave the record. Late registrations and imports can push the share above 100%.
| Year end | 2004 Mercedes-Benz SLK-Class | All 2004 cars |
|---|---|---|
| 2014 | 100.0% | 100.0% |
| 2015 | 99.3% | 94.1% |
| 2016 | 98.0% | 87.1% |
| 2017 | 96.5% | 77.1% |
| 2018 | 95.1% | 66.7% |
| 2019 | 94.1% | 57.2% |
| 2020 | 92.5% | 49.7% |
| 2021 | 90.1% | 42.3% |
| 2022 | 88.0% | 37.0% |
| 2023 | 84.1% | 32.8% |
| 2024 | 80.6% | 28.5% |
| 2025 | 77.6% | 25.3% |
Source:DfT / DVLA End of 2025 Updated
Recalls that may affect cars built around 2004
4 of the Mercedes-Benz SLK-Class’s 25 recalls in DVSA’s records cover cars built during 2004. 1 has no build dates, so could apply to any year.
The 2004 on this page is the year of first registration, not the year the car was built. A car first registered early in 2004 may have been built in 2003, and recalls apply to particular build dates and VINs, so check the recalls either side too.
| Launched | Concern | Built | Vehicles |
|---|---|---|---|
| 17 Aug 2021 | The driver's air bag may have a chemical change to its propellant over time | 30 Aug 2004 to 4 Dec 2013 | 61 (all models) |
| 17 Aug 2021 | The driver's air bag may have a chemical change to its propellant over time | 30 Aug 2004 to 4 Dec 2013 | 108,486 (all models) |
| 19 Apr 2017 | Faulty control unit may cause vehicle to perform outside specification | 1 Jan 2004 to 31 Mar 2017 | 42 (all models) |
| 10 Nov 2008 | Engine emergency shut off on board diagnosis or tank/speedo signal may be affected | 1 Jan 2004 to 8 Oct 2008 | 72 (all models) |
Every Mercedes-Benz SLK-Class recall · Check a specific car on GOV.UK · How we match recalls
Recall details come from manufacturers through DVSA. “Vehicles” is the number the manufacturer reported; “all models” means the figure covers everything in the recall. A recall listed here may not apply to a particular car: only the manufacturer or GOV.UK can say for its VIN.
Source:DVSA,UK Motoring analysis January 1992 to September 2026 Updated
Other years of the Mercedes-Benz SLK-Class
20 years of the Mercedes-Benz SLK-Class, by year of first registration, have their own page with MOT results, common faults, mileage and how many are left. Against all cars of the same age, the 2011 cars did best at their 2025 MOT (75.2% passed first time) and the 1997 cars worst (68.9%).
| Year | Registered | Left | Pass rate |
|---|---|---|---|
| 1997 | – | 945 | 68.9% |
| 1998 | – | 1,382 | 70.3% |
| 1999 | – | 1,609 | 70.9% |
| 2000 | – | 2,100 | 69.5% |
| 2001 | – | 2,596 | 70.8% |
| 2002 | – | 2,134 | 71.1% |
| 2003 | – | 1,925 | 67.9% |
| 2004 | – | 3,097 | 66.2% |
| 2005 | – | 4,835 | 67.9% |
| 2006 | – | 3,728 | 67.0% |
| 2007 | – | 3,485 | 67.3% |
| 2008 | – | 3,195 | 67.9% |
| 2009 | – | 2,477 | 69.3% |
| 2010 | – | 2,054 | 70.6% |
| 2011 | – | 2,539 | 75.2% |
| 2012 | – | 5,546 | 73.7% |
| 2013 | – | 4,572 | 74.3% |
| 2014 | 5,287 | 4,827 | 76.4% |
| 2015 | 5,009 | 4,787 | 80.0% |
| 2016 | 1,260 | 1,237 | 82.3% |
Registered: cars on the DVLA record at the end of the year they were first registered (these counts start in 2014, so older years show a dash). Left: licensed or declared SORN at the end of 2025. Both cover the United Kingdom. Pass rate: first-time passes at normal MOT tests in Great Britain in 2025; all cars: every car first registered the same year.
Data sources and methodology
| Figures | Source | Period | Records | Updated |
|---|---|---|---|---|
| MOT results and mileage | Anonymised MOT tests and results Driver and Vehicle Standards Agency Derived statistics UK Motoring | 2025 | 2,761 MOT tests of 2004 Mercedes-Benz SLK-Class cars | 15 September 2026 |
| Cars on the record | Vehicle licensing statistics Department for Transport | End of 2025 | 3,097 cars still on the record (licensed or SORN) | 15 September 2026 |
- MOT figures cover normal tests in Great Britain in 2025 of Mercedes-Benz SLK-Class cars first registered in 2004; retests are excluded. “All cars” means every car we match to a model, first registered in 2004.
- Year of first registration is DVSA’s first-use date: when the car was first registered, in the UK or abroad.
- Defects and advisories are DVSA’s descriptions made readable. Where on the car a defect was found (side, front or rear) is ignored, so the same fault on any wheel counts once per test.
- Mileage is the odometer reading at each car’s latest normal MOT of the year, as recorded by the tester. A few readings are in kilometres or mistyped; percentiles are not thrown by a handful of outliers.
- Cars on the record come from DfT table VEH0124 and cover the United Kingdom, including Northern Ireland; MOT figures cover Great Britain only.
- DVSA records the model name typed in at the test. We match those names to DVLA’s generic models, so a handful of tests may be counted under a close relative.
Contains public sector information licensed under the Open Government Licence v3.0.