2011 Mercedes-Benz C-Class — Should You Buy One?

269 complaints and 52% of the total, and what is in them is waiting: owner after owner describing letters that pushed their priority group lower, dealers with no parts, and recalls open three years after they were announced. Recall 16V081000 covers the driver's frontal inflator and 16V363000 the passenger frontal module on 2008–2011 C-Class sedans. A rupture puts metal fragments into the cabin during a crash. The supply problem that generated these complaints is over; the open recalls are not, because cars change hands and letters do not follow. Check the VIN on NHTSA's site yourself rather than taking the seller's word for it.

Repair cost: $0 with the recall — verify it was performed

Source: NHTSA complaints filed under airbags (269); 4 NHTSA recall campaigns on this model year.

62 suspension complaints, and the detailed ones are consistent and alarming: a rear subframe rotted to the point that the left rear control arm mount broke off, braking that pulls hard to one side with no warning light first, a stabilizer mount rusted through, a car declared undriveable. Owners note the same defect has been recalled in other markets but not in the United States, which means nobody is paying for it but you. It is a rust-belt failure, not a design flaw that hits every car, so a southern example can be clean. The check is cheap and there is no substitute for it: put the car on a lift and prod the rear subframe at the control arm mounting points with a screwdriver.

Repair cost (estimate): $1,800–$4,000 for a rear subframe, more if control arms and bushings are replaced with it — about 48% of what this car is typically worth

Source: NHTSA complaints filed under the suspension (62).

51 fuel-system complaints, and they describe a leak, not an odor problem. One owner pulled out of a driveway and left a stream of gasoline roughly seven feet long on the road; another found fuel sitting on top of the tank under the rear seat and was told to stop filling past half; several report a strong gasoline smell inside and out that fades as the level drops. A check engine light for an evaporative leak often comes with it. There is no recall. The test is simple and you should insist on it: have the seller fill the tank to the click, then park it for ten minutes and walk around the back of the car.

Repair cost (estimate): $400–$900 for a level sender seal; $1,200–$2,200 if the tank is replaced — about 27% of what this car is typically worth

Source: NHTSA complaints filed under the fuel system (51).

35 steering complaints on this year, continuing the pattern that dominates the 2010 record. The failure is abrupt: the wheel stays locked, the starter does nothing, and the rest of the car has power, so it reads as an electrical fault rather than a steering one until the bill arrives. The module is coded to the vehicle, which is why quotes run from four figures at an independent to well over two thousand dollars at a dealer. No recall covers it. Before you buy, switch the ignition off and on several times and listen for the lock releasing cleanly each time — a click that takes an extra beat is the symptom people describe in hindsight.

Repair cost (estimate): $900–$2,700 depending on whether the lock module or the full ignition switch is replaced — about 33% of what this car is typically worth

Source: NHTSA complaints filed under steering (35).