2008 Mercedes-Benz C300 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2008 Mercedes-Benz C300

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2008 Mercedes-Benz C300
$
196
to $
433
2008 Mercedes-Benz C300
$
270
to $
519
2008 Mercedes-Benz C300
$
339
to $
543
2008 Mercedes-Benz C300
$
94
to $
173
2008 Mercedes-Benz C300
$
74
to $
139

2008 Mercedes-Benz C300 Problems

Cracked Driveshaft Flex Discs May Cause Driveshaft Movement/Vibration

A vibration felt through the center floor of the vehicle can be caused by driveshaft flex discs, which crack and shred, causing excessive driveshaft movement. Not repairing these can cause damage to the driveshaft center support bearing, or, in the worst case scenario, damage to the transmission or differential.

Squeaking/Worn Brake Pads May Require Rotor Replacement Also

Due to the size and material used on the brakes of these vehicles, the brakes may start to squeak around the 50 percent wear point. The brake rotor surfaces become uneven, causing a lip to form at the outer edge of the rotor. Because of this, the rotors are usually replaced when the pads are worn (pad life varies depending on driving style and terrain).

Oil Seepage on Back of the Cylinder Heads

Mercedes Benz C300 models manufactured between 2008 and 2012 may have engine oil seeping or leaking from the back of the cylinder heads. This is commonly misdiagnosed as leaking valve covers.

On the back of the cylinder heads there are three, in total, plastic expansion plugs that plug access ports to the camshafts. These plugs are well known for seeping oil, and leaking if left unattended. The oil will run down the back of the engine and eventually make it to the ground. 

Replacement of these three plastic plugs is extremely simple, and should be done as regular maintenance. The recommended interval for replacement is every 60,000 miles.

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2008 Mercedes-Benz C300 Questions

What is the causes of check engine light to come on? (1 answer)

The engine operates fine and the car still runs well.

How much does it cost to replace the swirl flap linkage on my Mercedes? (1 answer)

How much does it cost to replace the swirl flap linkage on a 2008 C300 Mercedes?

Monitor Display Screen (1 answer)

The monitor display screen in my 2008 C300 Mercedes will come on for a few seconds, then goes completely black. Don't want to replace the entire unit, cost too much. Need to know if anyone has had this problem and know what to do.

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2008 Mercedes-Benz C300 Recalls

Passenger Frontal Air Bag Inflator Ruptures On Deployment

The passenger frontal air bag inflator may rupture on deployment, causing metal fragments to come through the air bag and injure occupants. Dealers will replace the passenger frontal air bag module free of charge to resolve the concern.

Driver's Frontal Air Bag Inflator Ruptures And Sprays Metal Fragments

The driver's frontal air bag inflator may deploy the air bag with excessive pressure, resulting in the inflator rupturing and causing metal debris to be sprayed onto vehicle occupants. Dealers will replace the driver's frontal air bag module free of charge to resolve the concern.

Air Bags Unexpectedly Deploy Or Do Not Function When Needed

The air bag control unit may corrode and cause it to malfunction, resulting in air bags that deploy when not intended, or do not deploy at all in an accident. Dealers will inspect and replace the air bag control unit as needed free of charge to resolve the concern.

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2008 Mercedes-Benz C300 Reviews

Rated
based on 6 customer reviews
Love the car. 52,000 miles and rear brakes are just needing replacement. Minor issues with maintenance warning message that was solved by replacing sensor in driver's seat belt buckle, otherwise never a problem. Only complaint to this "luxury sports" vehicle is wishing for a bit more than stock 228 HP. Am trading for CPO 2103 to solve that issue.
Wish I had bought a Ford. This thing is never in working order. Never out of the shop. Now having check engine lights constantly. Dealership charges $121.00 to do what O'Reilly's does for free. Every day I pray a Ford drops in my lap.
Wonderful car not one single problem. All I have done is the regular maintenace.

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