Been doing 50k + miles a year for the past ten the dervs I've had seem to start suffering as said above around the 150k + mark fuel pumps injectors. gearboxand clutch problems never had due to motorway miles I wouldn't be buying anything with over 100k on it if your planning on keeping it a while I've heard about legendary taxis from drivers doing 250-300 probably billshit just service regular and don't spend to much that way when it does go wrong its easy to decide if its time to get another or repair I'm due another next year will be a gttdi golf