A new report has revealed that diesel cars on UK roads are even more polluting than previously believed, with some cars 11 times beyond the legal limit.
Tests by consumer organisation Which? have found that the majority of new diesel cars still exceed the new emissions limits in "real-world" testing.
WLTP is a new fuel economy and emissions testing system that gives car buyers a more accurate picture of how their new car will perform in the real world.
Volkswagen has been forced to admit that it has received 17,000 complaints from UK owners whose vehicles have suffered after receiving the Dieselgate "fix".
The Environmental Audit Committee has demanded that Volkswagen explain why it has not fixed nearly 400,000 emissions-cheating Dieselgate cars.
Mercedes-Benz and Audi have announced recalls for nearly four million diesel cars across Europe in a bid to avoid fines and vehicle bans in European cities.
BBC’s Watchdog has investigated reports that cars involved in the Volkswagen 'Dieselgate' scandal and then 'fixed' have been losing power and may be unsafe.
Audi and Volkswagen blowed out of the World Endurance and World Rally Championships in style with one-two finishes in their final events.
What is the difference between a diesel engine and a petrol engine? As a fuel substance, diesel is denser, slower to evaporate and easier to refine than petrol. These qualities make it cheaper, and more efficient in terms of mileage, than petrol. While petrol and diesel engines work in mostly the same way, the methods behind them differ.