I purchased a 2008 Holden VE Commodore from a used car dealer 1 month ago, its only done 94000km and appeared very tidy. 24hrs after taking it home the check engine light came on and i returned it to the dealer who had his mechanic look at it. Diagnosis was transmission issue which the dealer paid to have fixed, received car back after 3 weeks and within 24hrs same issue. took it back again and dealer had mechanic repair issue, Now 24hrs later the same issue for a 3rd time. Do i have grounds to ask for a refund? Dealer keeps accepting responsibility but its very frustrating to have only had the car for 4 days in over a month