Mechanical
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Heater.
AirCon.
Shocks at rear.
Water Pump.
Brake Disks warped.
Electrical
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Heated seats don't any more.
Various shorts causing fuses to blow.
Headlamps really poor, not up to performance.
Starter motor.
Brilliant performance and generally superb to drive, the electronic suspension is just a toy and means that new rear shocks cost £220 ea.
The Engine is prone to overheating and the cooling system really is useless, the air con radiator is very prone to stone damage.
Overall a great car, just not as good as a Merc E280 ! Oh and GM dealers are the worst there is, rating of 1/10 is generous.
Must have had something wrong to overheat I find thty tend to run slightly cool on all the ones I have had never had a problem with over heating.