Jaguar hopes that new, more powerful six-cylinder diesel engines will allow it to compete better with its German rivals.
Six-cylinder diesels are the choice of more than 40 percent of Audi A6 and BMW 5-series customers.
The new 3.0-liter Diesel S version of the XF sedan offers 275hp. That is up from the 204hp provided by the engine it will replace, the 2.7-liter Lion V-6 co-developed by Jaguar Land Rover and PSA/Peugeot-Citroen and launched in 2004.
The new engine will appear across the JLR ranges and likely go in Peugeot and Citroen models starting this summer.