In article ,
The Natural Philosopher wrote:
Those figures are very poor - but it is a design dating from the '60s
and far too heavy with poor CD so the only way to get decent
performance was with vastly powerful engines.

No, its just an utterly over engined car - 4 liter superharged with an
auto box.

Design from the 90's actually :-)

It is still the basic XJ6 from the '60s. Later Jags are a great step
forward with lightweight construction involving ally body parts.

And supercharging is simply a brute force way to power - it always results
in worse consumption than an equivalent normally aspirated engine.

--
*It was all so different before everything changed.

Dave Plowman London SW
To e-mail, change noise into sound.