Transmission -change fluid between 30-50k is good as insurance (jerky first couple of cold changes - normal)

Coolant change is vital - every 3yrs - use Benz coolant - cheap

If it starts throwing codes/running rough - Maf is first suspect.

Oil type air filter might cause Maf contamination - min benefit

Oil separator can be cleaned to ensure no oil gets to Maf - easy

Starting/stalling - look at crank pos. sensor or cam pos. sensor

Brake pads, easy - Brake fluid flush at 2 yrs - easy cheap job

Engine mounts are oil filled and can go at 140K kms - quite easy

Drive belts (2) at 100k kms - 10 min job - belts cheap

At 100 k kms, consider the lower front susp rubbers - knocking noise when braking hard (Dealer job)

Any noise from engine at start up is likely to be belt tensioner brgs (2) - $30 fix - easy- Idler bearing is bought as a complete unit (easy fix but $60)

Kompressor runs until engine heats up (can feel noisy)- otherwise cuts in at about 2300 rpm - (pre face lift models)

Peeling console paint - all 6 colours are avail. - easy and perfect $40 fix.

Shocks might be shot at 120k kms - easy install -KYBs - $300 USD from Tirerack, really worth it

IMPORTANT - use short wheel bolts in tool kit if fitting the emergency spare wheel - using std wheel bolts will cause serious damage !

Important to keep PSE dry (pneumatic pump for central locking etc) - RH side trunk - under jack in foam jacket - Usual problem is a leaky trunk seal or aggressive hose washing - some guys wrap in plastic or mount upside down.

The K40 relay sometimes has an issue with 2 dry solder joints - again fairly easy fix by checking and re soldering

Noisy diff/transm. sound is nearly always tyres -aggressive tread is bad news - many posts on this. Soft tires also aggravate the noise -you can tell when tires need air by the sound.

Roof has 5 hydraulic rams - oil level inspection RH side in trunk - unusual to have to have to top up- generally reliable.(ram seals fixable) Any problems with roof - check switches first - Lube all hinges with silicone spray and cycle roof regularly- (lube 4 locking hooks also)

Clean rubbers where roof joins and lube with Krytox grease (dupont) (dont use ordinary grease on rubber) Lubing the rubbers will get rid of nearly all creaking - notice how quiet your car is after washing or rain

Rattle behind seat is usually 2 rubber blocks fallen out where window touches the parcel shelf (in trunk) -1 minute

Lights behind heater controls can be changed by pulling knobs off

Lights behind speedo cluster is fiddly but do-able -2 large 15 small

Headlights can mist up after washing (they have to breathe)- silicone bead down vert join on lights is cheap invisible fix - 2 min.

Loose indicator stalk is a remove steering wheel job - quite easy 2 bolts for airbag and 3 for stalk - large allen key for st/wheel (IMPORTANT - disconnect battery)

Door trims can creak/armrest come loose - easy fix - remove trims & re-glue armrest and other bits. - zero cost