Answer by
NKoroliv (55)
On Jaguar V6s and V8s, timing belts should be changed every 50,000 to 75,000 miles, depending on driving conditions. For example, vehicles driven under extreme conditions, such as in excessively hot or humid weather, dusty environments, or racing or emergency vehicle operations. On Jaguar V12s, timing belts should be changed every 35,000 miles.