We took a look at more than just power output when picking these diesel engines. We've already reviewed the diesel engines ...

most vehicles have relied on internal combustion engines. This technology combines fuel and air to generate thermal energy, which is then converted into mechanical torque that powers the car.

Diesel engine vehicles can be damaged by using low quality diesel exhaust fluid (DEF). Repairs can be very expensive with long downtime possible, and damage could void the manufacturer’s warranty.

The steep tariffs would force auto companies to raise car prices and drive consumers out of the market or to cheaper brands ...

"Ford is put in a horrible position," D'Agnolo said. "Because the engines we build go in their most profitable vehicles, they don’t have a choice. They have to pay the tariff regardless.