Kia and Hyundai's Theta engines have been around for a while, but they're not without problems. Here are some of the most ...

Inline-sixes tend to have problems tied to their size and length, higher camshaft flex and torsion, uneven air/fuel ...

The L5P Duramax diesel V8 is what powers heavy-duty work trucks like the 2025 Chevy Silverado 2500 HD and is an amazing powerhouse. It didn't exactly start off that way back in 1984 when GM first ...

We may receive a commission on purchases made from links. Some people have described the Ford 5.4L Triton engine as "one of the worst V8's ever produced." And while it didn't make it onto our list of ...

Way back in 1978, the Environmental Protection Agency (EPA) issued a waiver to the Clean Air Act, allowing gasoline that was made up of up to 10% ethanol, or E10, to be sold at the fuel pump. E10 is ...