Hi, this is my first post in this forum i wish someone could help me, im next to get a CLK63 AMG 2007 with 38,000km 2 owners since nex never been on drag strip or such things is a garage queen, i already went to mercedes dealer to full inspect the car and its ok but i have the horrible doubt about the M156 headbolt issue this car has the engine number 06906 so its very early produce what could you suggest me to do? i love the car and want to get it but a major repair is very expensive. HELP ME PlEASE

Headbolts is a well known issue but only few engines are concerned.

If you want the car, buy it with a discount if you can and if the headbolt issue arrived be prepared to add some money
This car is amazing.
My previous CLK 63 has now 160 000km and still has standard headbolts

I love mine . I can't go anywhere without people asking questions about it

Preventative head bolt replacement is much cheaper than waiting until they fail. Have them updated to the newer style bolts and don't worry about it.

Try to get over the potential failure hype....think about it tho; the car is how old and has how many miles? If a bolt hasn't failed by now it might be safe to say you are good.

I've been in my early M156 car for 5 years and ten of thousands of miles, no bolt issues.