Some engines will report major issues as early as 75,000 miles while we have also read plenty of posts of the 3.7 Magnum lasting well beyond 200,000 miles and even into 300,000 miles. Overall, when properly maintained, these engine should be good for at least 200,000 miles.
Is a 3.7 engine a good engine?
The 3.7L is a very good engine. It provides plenty of torque so it's very adequate for off-road use and even when towing. The downside of the 3.7L is street/expressway driving when you want acceleration. The Commander is heavy, and the 3.7L accelerates noticeably more slowly compared to the 4.7L and 5.7L.
How long do 3.7 engines last?
The engine life of 3.7 V6s is about 200,000 miles (320,000 km).
Most reviews suggest that the 3.7L isn't a bad engine. Many owners rave about its long-term reliability. It is prone to a few problems that you should be on the lookout for if you own or are considering a Jeep with the 3.7L (225.8 ci) engine. Being aware of these problems may help you prevent major engine failure.
Is a 3.7L V6 a good engine?
The 3.7L V6 is not a good engine; it is a great one. It has been designed to work for long intervals. The 300 HP is more than enough for almost anyone.
How many miles can a 3.7 engine last?
That said, the Ford 3.7 V6 Cyclone is a solid, reliable engine. Many last upwards or beyond 200,000 miles with proper maintenance.