Diesel

Kenworth has unveiled a sleek-looking SuperTruck 2 at the Advanced Clean Transport expo in Las Vegas, attempting to squeeze the maximum possible efficiency out of a diesel powertrain. It works, too, beating the company's most efficient truck by 100%.

In 2021, Australian mining and cleantech company Fortescue announced a plan to float the world's first ammonia-powered ship by 2022. It's a bit late, and not quite as ammonia-powered as we hoped, but the Green Pioneer now appears ready to roll.

By exposing healthy adults to diesel fumes before having their brain activity imaged in an fMRI machine, researchers have shown how traffic pollution can impair brain function, offering evidence of the connection between air quality and cognition.

UNSW researchers have prototyped and tested a retrofit system that converts diesel engines to run on 90% hydrogen, radically reducing both carbon dioxide and nitrous oxide emissions while boosting efficiency by an impressive 26% in the process.

A South Australian company is ready to go into full production with an innovative aftermarket kit that impressively cuts fuel consumption, particulates and carbon monoxide emissions from big diesel engines, asking only for a little water in return.

The fuel efficiency of pickup trucks has improved significantly over the past decade. We drove the 2020 Ram 1500 in both of its higher-efficiency powertrain options – the eTorque mild hybrid and the EcoDiesel turbodiesel – to see how they stack up.

Camcon's Intelligent Valve Technology (IVT) replaces the camshaft with electric actuators for precise digital control over the air charge of any engine. Now, the company's focus is shifting from cars to heavy diesels and artificial intelligence.

Highly capable off-road wagon or the 4WD equivalent of a Gucci handbag; however you view the Mercedes G-Class, the updated model is now available with a grunty 2.9-liter six-cylinder turbo diesel engine that takes you some 20 percent farther per gallon than the gasoline-powered G 500.

​​Porsche has announced that it is turning its back on diesel-powered vehicles, instead choosing to shift its focus toward a cleaner energy future. The news comes three years after parent company Volkswagen admitting to using a defeat device to cheat emissions testing.

Online supermarket Ocado has taken delivery of the first dual-fuel conversion of a Mercedes Sprinter by Liverpool's ULEMCo. The converted Sprinter has been modified to run on both diesel and hydrogen, cutting CO2 emissions and extending the range.

Nobody brags about entry-level compact cars, but there sure are a lot of people who own them. The 2018 Chevrolet Cruze is one of those cars, and with the hatchback option now available with a fuel-efficient diesel engine, Chevy may have come up with a near-perfect formula.

A yellow icon of American transport is looking to go green, with Daimler subsidiary Thomas Built Buses signaling a shift away from diesel-powered pupil-movers in favor of an electric variant that has a range of up to 160 km (100 mi) on a single charge.