How do I calculate whether it's worth keeping my existing car or replacing it? I have an eight-year-old Volkswagen Passat Estate 1.9TDI 140PS (52 plate, 97,000 miles), in average condition, which I keep having to repair. It is only now worth about £2500. I had the clutch and flywheel done last year (£1200) and a new computer (£750). I've just been told I need the cam belt job done (£500). There are other faults which keep emerging on a regular basis. The suspension looks like it needs new springs. Is it worth changing my car or keeping it?