Rude, unhelpful, inadequate, unprofessional and for sure the worst Fiat dealer in the UK! Following an independent assessor inspection my insurance decided to take my Fiat for further diagnostic and a compression test to SG Petch in York as recommended by the assessor. I wasn't very happy about sending the car to SG Petch York because one of my friends had an extremely bad experience with an Alfa Romeo bought from them but I had no choice in the matter. My car suffered water ingress into the engine and clear instruction have been communicated to the insurance not to start the engine but SG Petch had different ideas... After one week my insurance rang me and told me that SG Petch checked the car over and according to the Service Manager the car never suffered water ingress and the engine was damaged by normal wear and tear, but could not tell me what kind of test they done to the car. So, I rang SG Petch directly and spoken to Simon and astonishingly he told me that all he did to the vehicle was starting it, letting it idle for 5 minutes, heard the engine knocking, seen some smoke pouring out of the exhaust and concluded that the car had simple wear and tear without checking oil level or anything else... Obviously, Simon got very defensive when I started questioning his diagnostic skills considering that previous assessor already established that water did enter the engine and left traces of it in the air filter housing and also that the level of oil was double on the dipstick. Simon quickly backtracked and explained that he would have to run a diagnostic and perform a compression test to confirm this. Funnily enough that's what the car was sent there for, to have a diagnostic, a compression test and not to be started causing even more damage and delaying claim with totally inaccurate information!! They eventually did a partial dismantle and found water in the engine and compression loss in 2 cylinders but couldn't (wouldn’t) find the cause of the water ingress. The Vehicle was returned to me with top of engine dismantled dumped in the boot, diesel leaked all over the boot mat, clips carelessly left on top of the scuttle panel, with less mileage than when it left my house and to add insult to the injury even with the boot shelf and removable storage containing tools and personal belongings STOLEN from the boot! Oil level tripled on the dipstick and DPF blocked confirming that they started the vehicle many times while the car was with under their “care” and why has the mileage been tampered? I approached the insurance that confirmed to me that the car was never meant to come back to me in that state and that they would have to investigate it further and suggested that I could contact SG Petch directly to speed things up. So, I sent an email to SG Petch which was abruptly answered by the Aftersales Manager asking me to direct any questions to the insurance and not them! I even ended up having to contact FIAT UK customer service to act as intermediary and apparently SG Petch communicated to my insurance that they would only dismantle the engine and not put I back together but none of this is mentioned on the inspection report filled by them. Surely you wouldn't forget to add such important information on your report if that was true? They even lied to FIAT UK telling them that I never asked any technical questions to them, I had to forward my emails to prove that they were blatantly lying. I contacted SG Petch again and had an exchange of email with the Aftersales Manager which was totally unhelpful and not interested in answering or addressing any of my concerns even after Fiat UK customer service advised me to direct my concerns to them for a resolution trough a Technical Ticket that only the dealer can forward to FIAT. Refused to answer or explain why they decided to communicate wrong information to the insurance, why they started the car numerous times knowing that would cause more damage, why items have been STOLEN from it, why they allowed the car to leave their premises with partial dismantled engine and why the mileage has been tampered with... Eventually after a further inspection and my own homework the water ingress that caused the damage was found and claim now closed with extreme delays thanks to the unprofessional attitude of SG Petch in York. Stay well away from this dealer, I wouldn’t trust them to run a bath, never mind run a diagnostic check on a car!