No major problems got this car as used and little bit here and there to fix. happy with the car. just want to share something that I have done. driver side head rest has been stop moving up and down. got it fix by MB dealership cost around 380-400. heated mirror on the passenger side has be not working also has been fix by the dealership. cost me around 300-400 dollar. climate control stepper motor need to be replace as they start to have noise. parts is around 200 but the labor is a lot so i decided to delay the repair till it stop working. I have had few German vehicles already. First I love them even though they bring me some issues here and there. but I enjoy every dollar i spend on them.

IMPORTANT ADVISE
Always keep the Floor carpet dry and clean GET THE right Fit all SEASONS mats. Often check the floor even though you have the right mats, sometime the water still leak from the side( all electronic wires runs below your foot.) cleaner the Floor you kept better the condition and longer the life of all your electronic censers and devices.

Always keep up the oil changes, because that will keep you away from engine and transmission failure. Only use manufacture recommended oils grade and brand. On the engine oil (me every 7-8k km), Gear box oil (me every 35K km) and rear diff oil( if you do have one, me50K km) there is no such a oil that last you lifetime.

before you shut off your engine always turn all your audio and climatic control off. Never crank your ac or heat to the max once you just start the engine. yes your climatic control is meant to be use but not abuse. longer the abuse you give shorter the life it is.

Keep the engine bay clean and Air filter clean. MAF will last you longer that way.

Avoid the bumpy road and pud hole so that your control arms and suspension linkage will last you longer. Keep in mind those suspension linkage no matter how well you drive eventually it will need to be replace, due to the long hours of wear and tear from the road condition.

I did purchased the CLK used, so therefore i will eventually run in to some small problems here and there. But as i know the owner and the full history of the car. i do have full confident in it. Suspension i used on it is PSS9 coilover, H&R sways front and back and i used KMS camber kits front and back to correct the alignment. full exhaust except header( do not custom install your exhaust, due to if O2 censer position is too close and too far the engine light will go on) My CLK500 also was chipped and have crank pulley upgraded. modifying your car is good only if you know what you are doing.

Every mods have its own consequence behind it.

Suspension will kills your linkage bushing faster( due to the original design of the bushing is not meant to have turn or twist at the level of your car sits. unless you want/prepare to changes all your linkage bushings and bearings. Sometime you can not even find the right stuff, due to the reason other company does not make them due to the marketing purpose.

I want to stop here for now but i have a lot of good and bad experience from modifying the cars. So i pretty much know most of mods purpose. ask me question, if i know i would like to help you!!

BY THE WAY I AM FROM TORONTO, CANADA

When I purchased my car it was 2 year old and had 24,000 miles. I did not know anything about cars and this is my first benz. I runs great but has had many other problems with the electrical, suspension and heating. But even though I have 93,000 miles on it now; Mercedes stepped up and repaired the suspension as a warranty issue. I had not gotten a carfax when I purchased the car. My suggestion is to get a carfax and puchase a dealer certified vehical. It will save a lot of time, money and problems. To a degree I am happy with my car, I love the way it drives and Mercedes Benz Company has been very good to me. The customer service at my dealership has been great. I have found that good communication with you service person is very, very important. Get to know the service manager and your service representative. After the repair of my suspension problems the heater started working better and the engine runs quite. Although my windsheild wipers have stopped working; I believe this is a wiper motor problem or a fuse. Amazing the joys of car ownership. I do hope that my next Benz has made improvements. Thanks to Mercedes Benz for helping me understand and care for the car I love.

This car is an electical piece of cr*p. Its had all kinds of electrical issues - sensors going bad, SRS light always coming on when its not supposed to, warning that lights are out when they are not, etc. Ah, and the CD changer broke at 45,000 miles. I can't believe how much time and energy I've had to waste on this thing. Its my first and last Mercedes.

That said, no engine problems or AC or exhaust problems of any kind. The AC controls are ridiculous though, a total pain to operate.

That said, the interior is great (except for some premature yellowing of hard plastic around the door latches on the inside and some peeling of the brightwork around the vents)

It drives well and has great engine sound, good pickup for a super heavy car (the convertible I think is like 5000 lbs).

I bought it 3 years old and the steering wheel leather was all worn and nasty, got that replaced for $800, Mercedes would not cover it under warranty.

I've heard Mercedes quality has improved, I hope so. I've had more problems in 2 years with this car than I had in 10 years with a Geo, Ford and Saab.