2009 Mercedes Benz C350 used buying checklist

Test for the problems owners report most

The most reported problems of this model year, with what to look for on the test drive.

• Steering wheel locks up11 owner complaints, usually around 78,964 miles, owners paid about $1,400

  Turn the wheel from lock to lock while parked and on the road: it should be smooth, with no clunks, stiffness or warning lights.

• Won't start7 owner complaints, usually around 82,000 miles, owners paid about $1,526

  Start the engine cold and listen for knocking or ticking. Check for warning lights, oil leaks and a low oil level, and ask how often oil had to be topped up.

• Headlights failing or too dim6 owner complaints

  Check every exterior and interior light, and look for condensation inside the headlights.

Make sure these recalls were done

Recall repairs are free at any dealer of the brand. Ask the seller for proof, or have a dealer check the VIN.

• Air bagsRecall number 18V043000, Jan 10, 2018
• Electrical systemRecall number 17V177000, Mar 14, 2017
• Air bagsRecall number 17V017000, Jan 10, 2017
• Air bagsRecall number 16V363000, May 26, 2016
• Air bagsRecall number 16V081000, Feb 11, 2016
• Air bagsRecall number 15V711000, Oct 27, 2015
• Exterior lightingRecall number 14V177000, Apr 11, 2014

Repairs the maker may still cover

Warranty extensions can cover a known problem beyond the normal warranty. Check whether this car is still within the time or mileage limit.

• Visibility/wiperOct 29, 2020

Service bulletins worth asking about

Repair instructions the maker sent to dealers for known problems. Ask whether any of these repairs were done.

• Headlamp, front fog lamp leaky or foggedApr 16, 2026
• Headlamp, front fog lamp leaky or foggedMar 9, 2026
• Headlamp, front fog lamp leaky or foggedApr 28, 2025
• Headlamps leaking or foggedApr 28, 2025
• A popup is seen on the HU with the message "data connection temporarily not available". Potentially...Apr 21, 2025
• During a phone call, the called party has difficulty understanding/cannot understand the driver, or...Mar 5, 2025

Before you pay

• Decode the VIN and make sure it matches the title, the registration and the car itself.
• Get a vehicle history report to check for accidents, salvage or flood titles and odometer problems.
• Ask for service records, especially oil changes and any transmission fluid service.
• Start the car from cold, and drive it at city and highway speeds for at least 20 minutes.
• Have an independent mechanic inspect the car before you sign anything.