I have a 94 Saturn (96,000 miles), 89 Nissan Coupe 323,000 km), 2000 Mazda (85,000 km) and a 97 F150 (120,000 km). Usually I'll keep a vehicle until the repair costs increase and are more frequent, or when no longer needed. The longest I kept a vehicle was a 92 Dodge 3/4 w/ 5.9L...