Balance shaft / idler sprocket wear (pre-2008)
usually 80,000–180,000 km · High risk
model years 2004–2008 only
Signs: Engine light P0016 / P0017, rattle
Fix: Replace sprocket and chain
€2,500–5,000
Common faults, service intervals and costs
Mercedes-Benz SL (R230)
2001–2011
2
engines covered
7
known faults
9,932
roadworthiness tests in the statistics
Enter your VIN and mileage and get a plan built for your exact engine and gearbox.
The Mercedes-Benz SL (R230) was built from 2001 to 2011.
For this generation we cover 2 engines and 7 known faults, each with the mileage range where it usually appears.
The most expensive known risk is Balance shaft / idler sprocket wear (pre-2008): it usually appears at 80,000–180,000 km and costs €2,500–5,000 to fix.
In UK roadworthiness tests in 2024, at 100–150 thousand km this model most often failed on: suspension (7.8 %), lights, wipers and visibility (6.2 %), tyres and wheels (5.2 %). It fails less often than average on: brakes, suspension, steering, tyres and wheels, lights, wipers and visibility, body and corrosion, exhaust, emissions and leaks.
Engines
| Engine | Fuel | Timing drive | Oil |
|---|---|---|---|
| 2.5 / 3.0 / 3.5 V6 & V8 (Mercedes M272 / M273) | Petrol | Chain | 5W-30 / 5W-40 · MB 229.5 · ~8.0 L · every 15,000 km |
| V6 / V8 petrol (Mercedes M112 / M113) | Petrol | Chain | 5W-40 / 0W-40 · MB 229.3 / 229.5 · every 15,000 km |
Faults by engine
2.5 / 3.0 / 3.5 V6 & V8 (Mercedes M272 / M273)
Intake manifold flap failure
usually 100,000–200,000 km · Medium risk
Signs: Engine light, power loss
Fix: Replace intake manifold
€500–1,200
Thermostat / coolant leaks
usually 100,000–200,000 km · Wear part
Signs: Slow warm-up, coolant loss
Fix: Replace thermostat
€150–400
V6 / V8 petrol (Mercedes M112 / M113)
Camshaft adjuster magnet oil leak
usually 80,000–160,000 km · Medium risk
Signs: Oil in the wiring plug — can reach the ECU
Fix: Replace magnet, check the harness
€150–600
Crankcase breather hoses
usually 100,000–200,000 km · Wear part
Signs: Oil leaks, whistle
Fix: Replace hoses
€100–300
Crankshaft pulley (harmonic balancer) separating
usually 150,000–300,000 km · Medium risk
Signs: Vibration, drive belt squeals or comes off
Fix: Replace the crankshaft pulley
€200–500
Gearboxes
5G / 7G / 9G-Tronic
Conductor plate / speed sensor (5G / 7G-Tronic)
usually 100,000–220,000 km · Medium risk
Signs: Stuck in gear, limp mode, harsh shifts
Fix: Replace the conductor plate; fluid every 60–100,000 km
€500–1,500
Scheduled service
Intervals and typical prices for the 2.5 / 3.0 / 3.5 V6 & V8 (Mercedes M272 / M273) engine. Other engines differ in oil, timing drive and some filters; the app gives the exact plan.
| Item | Interval | Typical price |
|---|---|---|
| Engine oil + oil filterEngine | every 15,000 km or every 12 months | €70–150 |
| Cabin (pollen) filterClimate | every 15,000 km or every 12 months | €15–40 |
| Brake fluidBrakes | every 24 months | €50–95 |
| A/C service (regas + desiccant)Climate | every 24 months | €70–150 |
| Air filterEngine | every 30,000 km or every 24 months | €15–45 |
| Spark plugsIgnition | every 60,000 km or every 48 months | €50–160 |
| Automatic transmission fluidTransmission | every 90,000 km | €200–450 |
| Auxiliary (serpentine) beltEngine | every 120,000 km | €70–180 |
| Coolant replacementCooling | every 150,000 km or every 96 months | €70–150 |
| Timing chain inspection (listen on cold start)Engine | every 150,000 km | €0–120 |
| Front brake padsBrakes | usually at 30,000–60,000 km | €60–150 |
| Front brake discs + padsBrakes | usually at 60,000–120,000 km | €150–320 |
| Rear brake padsBrakes | usually at 50,000–90,000 km | €50–130 |
| Tyres (set of 4)Wheels | usually at 40,000–60,000 km | €320–700 |
| Wiper bladesBody | checked at service | €20–50 |
| 12V batteryElectrical | checked at service | €100–220 |
Roadworthiness tests by mileage
Share of tests in the United Kingdom (DVSA MOT, 2024) that this model failed because of each system. Bold red means more often and green less often than an average car of the same age and mileage. Sample: 9,932 tests.
| thousand km | 0–50 | 50–100 | 100–150 | 150–200 | 200–250 |
|---|---|---|---|---|---|
| Brakes | 1.6 % | 3.6 % | 5.1 % | 6.2 % | 6.7 % |
| Suspension | 2.4 % | 4.4 % | 7.8 % | 8.8 % | 8.3 % |
| Steering | 0.1 % | 0.3 % | 0.7 % | 1.1 % | 0.5 % |
| Tyres and wheels | 1.2 % | 3.8 % | 5.2 % | 7.0 % | 8.8 % |
| Lights, wipers and visibility | 3.3 % | 5.1 % | 6.2 % | 9.8 % | 9.4 % |
| Body and corrosion | 0.2 % | 0.3 % | 0.7 % | 1.0 % | 0.7 % |
| Exhaust, emissions and leaks | 0.4 % | 0.8 % | 1.9 % | 2.5 % | 2.3 % |
Roadworthiness tests in the Netherlands by age
Share of this model's Dutch fleet that had a defect in each system at a roadworthiness test (APK) in 2025. Bold red means more often and green less often than an average car of the same age and fuel. Sample: 1,853 cars.
| age (years) | 15–19 | 20+ |
|---|---|---|
| Brakes | 0.5 % | 2.7 % |
| Suspension | 2.1 % | 5.2 % |
| Steering | 0.3 % | 0.9 % |
| Tyres and wheels | 7.0 % | 8.4 % |
| Lights, wipers and visibility | 6.0 % | 8.5 % |
| Body and corrosion | 0.0 % | 0.0 % |
| Exhaust, emissions and leaks | 1.0 % | 1.4 % |
Most common engine versions in the EU
New cars of this generation registered in the EU, Iceland and Norway 2010–2025: 2,684, of which 0 in Croatia. The share shows how common each version is.
| Version | Share | Years | CO₂ | Fuel use |
|---|---|---|---|---|
| 2.5 / 3.0 / 3.5 V6 & V8 (Mercedes M272 / M273)3.5 (3,498 cm³) · Petrol | 45.9 % | 2010–2011 | — | — |
| 2.5 / 3.0 / 3.5 V6 & V8 (Mercedes M272 / M273)3.5 (3,498 cm³) · 232 kW (315 hp) · Petrol | 14.3 % | 2011–2011 | — | — |
| 2.5 / 3.0 / 3.5 V6 & V8 (Mercedes M272 / M273)5.5 (5,461 cm³) · Petrol | 12.1 % | 2010–2011 | — | — |
| 2.5 / 3.0 / 3.5 V6 & V8 (Mercedes M272 / M273)3.0 (2,996 cm³) · Petrol | 10.3 % | 2010–2011 | — | — |
| 6.2 Petrol6.2 (6,208 cm³) · Petrol | 6.5 % | 2010–2011 | — | — |
| 2.5 / 3.0 / 3.5 V6 & V8 (Mercedes M272 / M273)5.5 (5,461 cm³) · 285 kW (387 hp) · Petrol | 4.4 % | 2011–2011 | — | — |
| 2.5 / 3.0 / 3.5 V6 & V8 (Mercedes M272 / M273)3.0 (2,996 cm³) · 170 kW (231 hp) · Petrol | 2.5 % | 2011–2011 | — | — |
| 4.7 Petrol4.7 (4,663 cm³) · 320 kW (435 hp) · Petrol | 1.1 % | 2011–2011 | — | — |
Source: European Environment Agency (EEA), monitoring of CO₂ emissions from new passenger cars, CC BY 4.0. CO₂ and fuel use are official type-approval values (WLTP from 2021), not real-world consumption.
Common questions
Does the Mercedes-Benz SL (R230) have a timing chain or a timing belt?
2.5 / 3.0 / 3.5 V6 & V8 (Mercedes M272 / M273): chain; V6 / V8 petrol (Mercedes M112 / M113): chain.
What are the known problems with the Mercedes-Benz SL (R230)?
The faults with the highest risk: balance shaft / idler sprocket wear (pre-2008) (80,000–180,000 km, €2,500–5,000); conductor plate / speed sensor (5G / 7G-Tronic) (100,000–220,000 km, €500–1,500); intake manifold flap failure (100,000–200,000 km, €500–1,200); camshaft adjuster magnet oil leak (80,000–160,000 km, €150–600). The full list by engine is on this page.
What does the Mercedes-Benz SL (R230) most often fail its roadworthiness test on?
In UK roadworthiness tests in 2024, at 100–150 thousand km this model most often failed on: suspension (7.8 %), lights, wipers and visibility (6.2 %), tyres and wheels (5.2 %). It fails less often than average on: brakes, suspension, steering, tyres and wheels, lights, wipers and visibility, body and corrosion, exhaust, emissions and leaks.
What should you check when buying a used Mercedes-Benz SL (R230)?
Before you buy, ask an authorised dealer to check by VIN whether the car has any open recalls. On the test drive, watch for these signs: engine light P0016 / P0017, rattle; stuck in gear, limp mode, harsh shifts. The full checklist is in the guide to buying a used car.
Other generations
Models with the same engines
These models share engines with this car, so they share some of its faults too.
Mercedes-Benz C-Class (W204) 2007–2014Mercedes-Benz E-Class (W212) 2009–2016Mercedes-Benz C-Class (W203) 2000–2007Mercedes-Benz E-Class (W211) 2002–2009Mercedes-Benz GLK (X204) 2008–2015Mercedes-Benz ML (W164) 2005–2011Mercedes-Benz CLK (C209) 2002–2010Mercedes-Benz SLK (R171) 2004–2011
Other Mercedes-Benz models
Mercedes-Benz Vito (W639) 2003–2014Mercedes-Benz A-Class (W169) 2004–2012Mercedes-Benz CLS (C219) 2004–2010Mercedes-Benz S-Class (W220) 1998–2005Mercedes-Benz A-Class (W168) 1997–2004Mercedes-Benz B-Class (W245) 2005–2011Mercedes-Benz CLK (C208) 1997–2003Mercedes-Benz ML (W163) 1997–2005Mercedes-Benz R-Class (W251) 2005–2013Mercedes-Benz S-Class (W221) 2005–2013
Sources and notes
Faults, intervals and prices are indicative and collected from public sources and owner experience; always rely on the service book and a qualified workshop. Test statistics: DVSA – Anonymised MOT tests and results, Open Government Licence v3.0. Dutch tests: RDW Open Data (CC0). Engine versions: EEA, monitoring of CO₂ emissions from new passenger cars (CC BY 4.0, DG CLIMA). Owner complaints: NHTSA ODI (public domain). Recalls: DVSA Vehicle Safety Branch Recalls Database, OGL v3.0. Brand and model names are trademarks of their owners and are used only to describe the vehicles.
Updated 08/10/2026