Carsieve Mercedes-Benz C-Klasse 204 C 350 CDI BlueEFFICIENCY, 231 PS, 7-speed automatic, all-wheel drive (2009–2011)
- Power
- 231 PS (170 kW)
- Engine codes
- 642832
- Gearbox
- 7-speed automatic
- Production years
- 2009–2011
- Running cost per month
- €567
- Fuel
- Diesel
- Median price
- €7,499
- Reliability
- 2/5
- DIY
- 1/5
Research for this car
- Generation guide Mercedes-Benz C-Class W204 (2007-2014): known problems and buying guide
Check the M271 timing chain, the 7G-Tronic shifts and rear axle rust before paying. Ask for timing chain records.
- Gearbox guide Mercedes 7G-Tronic (722.9) 7-speed automatic: problems, costs and what to check
Buy only with fluid records and a clean full-system scan, and avoid any car that has run in limp mode or judders at a steady speed.
Known issues for this car
| Issue | Affects | Typical km | Repair cost | Source |
|---|---|---|---|---|
| Rear axle carrier rust | All bodies and model years | Not stated | About 2,000 EUR (year not stated) | Generation guide |
| Ignition and steering lock | All model years | Not stated | 645-1,042 EUR at Mercedes (2015) | Generation guide |
| Automatic gearbox shift quality | 7G-Tronic (722.9) | 50,000-180,000 km | No confirmed price | Generation guide |
| Conductor plate and speed sensor failure | All 722.9 cars; early 2004-2007 builds most | 50,000 to 80,000 km | About 850 EUR for the control board (Russia, 2019 press article) | Gearbox guide |
| Torque converter lock-up clutch judder | All 722.9 cars; a Daimler bulletin covers Plus cars built 2011-2012 | 100,000 to 200,000 km | No confirmed price | Gearbox guide |
| Valve body and clutch pack wear | All 722.9 cars | 100,000 to 180,000 km | 1,500 to 1,700 EUR for a complete mechatronic (Russia, 2019 press article) | Gearbox guide |
| Old fluid and missed adaptation reset | All 722.9 cars | 80,000 to 100,000 km | About 600 EUR for a flush with new fluid (Austria, 2022) | Gearbox guide |
Before you buy this car
From the generation guide
- Lift the car and check the rear axle carrier for rust. Rust that has eaten through means a repair of about 2,000 EUR (year not stated).
- Turn the key several times. Clicking with no start, or a steering lock that stays locked, means the electronic steering lock is failing.
- On the test drive, check for jerks when pulling away and on the 1-2 and 2-3 shifts. Ask for gearbox oil change records. A Mercedes scan tool (XENTRY) shows pressure deviations. Above 0.5 bar points to valve body wear.
From the gearbox guide
- Read the shift pressure data with XENTRY or an equal Mercedes scanner. Bad result: pressure deviations above 0.5 bar, or adaptation values above 30 percent. Those point to valve body wear.
- Read the full gearbox fault memory with a full-system scanner. An engine-only OBD2 reader does not show it. Bad result: speed sensor codes P0717, P0718, P0722 or P0793, or any stored limp mode.
- Test drive cold and warm, and pull away from a stop. Bad result: stuck in 2nd, slipping between 1st and 2nd, or limp mode at about 48 km/h (30 mph).
- Hold a steady light throttle at about 60 km/h. Bad result: a shudder or hum. A scanner shows converter slip; 5 to 25 rpm is normal, and above about 80 rpm points to clutch wear.
- Ask for the fluid invoices and check the fluid. Bad result: no change after about 80,000 km, dark brown or black fluid, a burnt smell, or a fluid other than the one for the build. A wrong fluid can cause code P0741. Red-amber is the correct colour.
- Ask a dealer whether bulletin LI27.20-P-055758 applies to the car's VIN, and whether it was done. Bad result: lock-up codes FC 2783 or FC 0741 still stored.
Running costs
| Operational | €224 |
|---|---|
| Workshop | €163 |
| Fixed costs (tax, insurance) | €180 |
| Total per month | €567 |
| New-car depreciation (not included) | €99 |
ADAC figures for 15,000 km a year over 60 months
Market
Listings on mobile.de in this generation with this fuel, gearbox and power.
- Listings
- 62
- 25th percentile
- €5,900
- Median price
- €7,499
- 75th percentile
- €9,950
- Median mileage
- 225,000 km
- Median first registration
- 2010
- Dealer share
- 33.9%
Prices by first registration
| First registration | Listings | Median price | Median mileage |
|---|---|---|---|
| 2011 | 5 | €7,950 | 216,100 km |
| 2010 | 51 | €7,500 | 225,000 km |
| 2009 | 4 | – | – |
| 2008 | 2 | – | – |
Medians only for years with at least 5 listings. Many cars are first registered after production ends, so years can run past the build years.
Price history
| Month | Listings | Median price | Middle half | Median mileage |
|---|---|---|---|---|
| Nov 2026 | 62 | €7,499 | €5,900 – €9,950 | 225,000 km |
| Oct 2026 | 62 | €7,499 | €5,900 – €9,950 | 225,000 km |
Median asking price at the last snapshot of each month.
ADAC versions
All 8 ADAC versions
| Version | Power | Body | Doors | Production years | Running cost per month |
|---|---|---|---|---|---|
| C 350 CDI BlueEFFICIENCY Elegance 4MATIC 7G-TRONIC | 231 PS | Saloon | 4 | 2009–2011 | €569 |
| C 350 CDI BlueEFFICIENCY Avantgarde 4MATIC 7G-TRONIC | 231 PS | Saloon | 4 | 2009–2011 | €577 |
| C 350 CDI BlueEFFICIENCY Special Edition 4MATIC 7G-TRONIC | 231 PS | Saloon | 4 | 2009–2010 | €579 |
| C 350 CDI BlueEFFICIENCY SPORT EDITION 4MATIC 7G-TRONIC | 231 PS | Saloon | 4 | 2010 | €553 |
| C 350 CDI BlueEFFICIENCY T-Modell Elegance 4MATIC 7G-TRONIC | 231 PS | Estate | 5 | 2009–2011 | €558 |
| C 350 CDI BlueEFFICIENCY T-Modell Avantgarde 4MATIC 7G-TRONIC | 231 PS | Estate | 5 | 2009–2011 | €558 |
| C 350 CDI BlueEFFICIENCY T-Modell Special Edition 4MATIC 7G-TRONIC | 231 PS | Estate | 5 | 2009–2010 | €560 |
| C 350 CDI BlueEFFICIENCY T-Modell SPORT EDITION 4MATIC 7G-TRONIC | 231 PS | Estate | 5 | 2010 | €534 |