Avoid! 1st service by them (service A) I asked them to check air conditioner as it needed to be re-gassed. After 3 days I was presented with an invoice just under $3000. No phone calls to confirm the extras. So it went from a basic service to new brakes and rotors, suspension A Arms, all new belts, fuel pump, engine mounts. I wasnt happy but paid. On my way home I noticed that the air con was the same. I rang and was told that it was re-gassed but the crack they noticed in one of the air con lines must have gotten bigger (in the 30 mins from picking it up!). Also whilst driving home the coolant light went on. When I arrived home I took a look over the car and noticed that they had rotated the tyres. However on the SLK they have a staggered tyre set up, so this means they put the large tyres on the front and the smaller on the rear. Wrong! They also didn't check or refill the coolant. With less than 1000kms travelled since that service the car started losing power. A local mechanic diagnosed this as a faulty Mass Air Flow sensor. So i took the car back. Again, told them about the air con. 4 days passed, I popped in un announced to find the belts they 'replaced' sitting on the windscreen looking like bits of chewed up rubber. Asked them how the MAF sensor was and was told that it wasnt the MAF and the car would require a new Kompressor (as it was only operating at 53%), and a throttle body and that there was no crack in the air con pipes it was a because the airconditioner compressor was also broken. Total estimated cost $2500+. I collected the car and took it to a specialist. In little more than 2 hours after dropping it off they confirmed that it was indeed the MAF sensor, that SYdney Prestige had used a different refrigerant in the air con, that my engine mounts had not been replaced nor had any of the filters, that there was nothing wrong with any of the aircon lines or compressor. Car now goes like it was when brand new.