strange how i disagree, from 1979 to 1992 I owned 11 SD1 v8,s including a janspeed twin turbo,very quick but the brakes were rubbish even after a change to jag calipers,
each and every one of them did sterling service, only one required a cam change due to wear, another required a set of wheel arches put in it, four required new boge self levellers,and one broke a rockershaft, which i changed at the scrapyard as it stil drove well on 7 cylinders,
all were thrashed as hard as i could(young and stupid then) everywhere i drove, only one was an auto, which within 2 weeks of owning it was changed to manual configuration, each and everyone of them was only run on duckhams 20/50 and MAN filters, fuel consumption for the performance was great, one i think had central locking problems whch turned out to be bad earths, the turbo clocked up 260 thousand miles before i sold it,preffered the twin su set up to the injection as it was easier to play with but the two vitesse i had were pretty good,
still get to play with a twin plenum vitesse when im in uk if it needs working on, they could have really done with an lsd as it was all to easy to light up one rear wheel, but thats about my major gripe,all in all a brilliant car in my humble opinion!!