With the new engine, Jaguar claims fuel economy of 37mpg for the F-Pace, 40mpg for the XF and 41.5mpg for the XE.
CO2 emission for the XF and XE are 163g/km and 157g/km respectively. The F-Pace's figure is yet to be confirmed.
The new engine is at its quickest in the XE; Jaguar claims a 0-62mph time of 5.5sec, while the XF and F-Pace take 5.6sec and 5.7sec.
With 296bhp, the XF will sit in a fairly unique place in the market; the only petrol Audi A6 available is the warmed-up Audi S6, while other rivals’ closest cars in terms of power are either diesel, or more performance-oriented, such as the BMW 5 Series 540i xDrive, and Mercedes-Benz E 350 d.
Back in February, Jaguar added to the ranges of the three cars with 197bhp and 247bhp petrol engines, making this the third 2.0-litre petrol Ingenium variant in the cars’ ranges, sitting above the 250bhp unit.
Jaguar Land Rover is also poised to replace its V6 engines with 3.0-litre, straight-six Ingenium petrol engines.