jaguar v6 3.0 engines - difference in x-type & s-type?

No, the S-Type also has 240bhp to the X-Type's 230bhp, but the car weighs 200kg more than the X-Type, and the automatic gearbox in the earlier S-Types is just a Ford box (pushed for release date), the later S-Types and the X-Type have a Jaguar desgined one which is better, and has different ratios.

To the idiot saying it's a Ford engine and it's exactly the same in all the other cars, they need to learn what they're talking about. The block is essentially a Ford block, but the heads were re-designed by a Jaguar / Ford team working together to improve performance, hence the "same" engine when used in Fords doesn't develop the same HP.

Try it (if not already done so) in Sport mode, and if there's still no quick acceleration then there's a problem as the S-Type is not slow off the mark, especially considering it's size, it should be able to pretty much keep up with the X-Type.

Well, its now not a jag engine, is it? Its a bloody mondeo engine... (ford owned jag from 1990---) ford as a rule use mineral oil (its affordable) and mineral oil and synthetic oil DONT combine... Weve put synthetic oil in jags for years... My mate owns an XK... And we possess a storage... All you have got to do is fully flush the engine, exchange the filters and fill up... For my part, alternatively of paying 30 -35 quid a gallon, and leaving it in for 15000 miles.. I purchase low priced and nasty oil, at 6 quid a gallon, and change it every 2000 miles... My present volvo has 252 thousand on the clock .. Its 9yrs ancient.. And has never ever been to volvo...

same ford engine .just different calibration and minor changes. same basic engine in a range rover but again with different calibration and major Turbo change etc.

since weight of both cars is approx same any extra power will show as better acceleration. This car is commonly chipped for extra power with of course shorter lifespan of engine and in some cases wrecking it withing a year or less.Any chipping will of course invalidate any warranty and insurance.

such 'proof' can only come from a jaguar employee in engineering field and for giving commercial data away will be subject to potential discipline and job loss as part of normal working contracts.