This week I'm driving a v12 around...
Discussion
I did 150,000 miles in 2 years in an X305 XJ12 in the early 00s. Averaged 18mpg I think, proper calculations not the OBC. Fabulous cars, absolutely flawless in that time as was the 4.0 Sovereign that replaced it (until I wrapped it around a post).
My XJR-S averaged 13mpg though. Crap 3 speed auto and weirdy beardy Zytec engine management system vs a 4 speed and a proper Denso system though. Also might have driven then R-S a bit harder
My XJR-S averaged 13mpg though. Crap 3 speed auto and weirdy beardy Zytec engine management system vs a 4 speed and a proper Denso system though. Also might have driven then R-S a bit harder

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