“How long will it last?” When it comes to buying a used car, it’s probably the most frequently asked question. The easy answer is: It depends. In the past, it was expected that a car engine would last at least 100,000 miles. But thanks to advances in the automotive industry, it’s not uncommon to see vehicles rolling down the road with 150,00 and even 200,000 miles on their engines. And every now and then you’ll hear about those unicorn-like cars that surpass 300,000 miles. How long a car engine will last typically comes down to three main factors: Maintenance Every car, truck and SUV that rolls off the assembly line comes complete with an owner’s manual. Inside that manual is a section that spells