With a claimed 261-mpg rating, the Volkswagen XL1 is the most fuel efficient car in the world while sporting a design like no other car on the road today.

One of a half dozen Volkswagen Golfs unveiled today at the Geneva Motor Show, the GTD model is particularly noteworthy as until now its been forbidden fruit in America.

At the 2013 Geneva Motor Show today, Subaru held the worldwide debut of its Viziv Concept, a future-generation crossover concept with a Subaru Boxer Diesel Hybrid under the hood.

Mitsubishi has just revealed what it calls the GR-HEV Concept at the 2013 Geneva Motor Show, a diesel-hybrid sport utility truck featuring a 2.5-liter Mitsubishi Clean Diesel powerplant paired with an electric motor.

Denied it for decades, fans of diesel-powered Volkswagens across America are about to get the car of their dreams: the GTD.

Torque is as good as money to off roaders and now there’s more information on an engine that would increase the Jeep Wrangler’s available lb-ft.

Looking like nothing else currently in production, Volkswagen has today revealed what will easily be the most bizarre model to hit the road. It will also be the most fuel efficient, with a claimed 261 mpg rating!

Perhaps the perfect combination of fast and frugal, Volkswagen has unveiled its all-new Golf GTD model today ahead of its world premiere at the Geneva Motor Show next month.

Fine folks in Europe will get a gift from Land Rover soon: a diesel hybrid version of the 2013 Range Rover. But it won’t be marketed to Americans… for now.

MINI has been mulling over bringing diesel models to America for quite some time now, and the British automaker might finally pull the trigger with its next wave of new models.

Recently emancipated and breaking new ground, Chrysler’s Ram pickup truck brand just announced that the RAM 1500 pickup truck will be available this year with a diesel V6. 

Depending on how successful the sales are for the Grand Cherokee diesel, Jeep may bring a Wrangler diesel to market.

The National Biodiesel Board is commending Chevrolet for offering the its new diesel-powered Cruze compact sedan with an engine capable of burning B20 blended biodiesel fuel.

Hoping to cash in on growing diesel demand in the U.S. market, Chevrolet debuted the Cruze Clean Turbo Diesel today in Chicago.

Audi just announced pricing and fuel mileage estimates for the long wheelbase diesel version of its A8 flagship sedan.

Mazda just released the performance specifications for its 2014 race car powered by a modified version of the production 2.2-liter SkyActiv-D diesel engine.

Chevrolet just confirmed that it will debut the diesel version of the Cruze compact sedan during the 2013 Chicago Auto Show.

The 2014 Chevrolet Cruze diesel is expected to hit dealerships this May, and when it does, it’ll have comparable fuel economy figures to the gasoline Cruze Eco model.

The production variant of the Volkswagen XL1 has been spied cold-weather testing in -22 Fahrenheit temperatures as the German automaker put its 235-mpg diesel-hybrid car to the test.

Trying not to be left in the dust behind Porsche and Mercedes, Audi has confirmed that it is working on a diesel-hybrid halo car that will sit above the R8.

Last June, Mazda announced that it planned to bring a version of its new twin-turbo diesel engine to Grand Am series racing, and now the brand just released a studio photo of the race car. 

Infiniti unveiled its 2014 Q50 sport sedan today during the 2013 Detroit Auto Show, introducing it as the first of what will be a larger global push by the brand. 

At the introduction of the 2014 Ford Transit commercial vehicle last week, the brand suggested that the Transit Connect and people-mover Wagon may also get diesel power in the near future. 

Once known for its rotary engines, Mazda will become the first Japanese automaker to market a diesel model in the United States with its new Mazda6.