Jowl Morrow, chief executive officer for Alpha Drivers Testing & Consulting, highlights his ultra-efficient Volvo VNL tractor and how his rig routinely reaches previously unheard of fuel efficiency.

General Motors is so proud of its diesel-like 2.7-liter that the turbo four-banger is basically replacing V6s in GM trucks. But the small-block V8s remain safe, especially now that GM has reportedly ...

The new 2023 Toyota Highlander is replacing its V6 engine for a more powerful turbo four-cylinder engine. The outgoing 3.5-liter V6 gasoline engine was rated for 295 horsepower and 263 pound-feet of ...

The past few years have seen General Motors (GM) introduce a fresh range of gas-fueled powertrains that deliver plenty of power and reasonable fuel economy. The 2.7-liter turbocharged L3B inline-four ...

The Chevrolet Silverado HD — and its corporate twin in the GMC Sierra HD — can be had with either a standard 6.6-liter gasoline V8, or the optional 6.6-liter Duramax turbo-diesel. Opting for the TD ...

Whether or not twin-turbo engines require premium gas is a matter for each individual engine manufacturer to decide. Reviewing some carmakers' statements as to which grade of fuel they recommend for ...

Combustion engines with an odd number of cylinders are not unheard of but are not particularly common, either. Honda‘s just trotted out an interesting one: A V3, so, two pistons on one side and one on ...