Equal consumption of fuel ????
Come on, I have a collegue who's got a 3.0i and he never goes below 13-14l/100km (and he is a slow driver). I'm running 9.5l. Performance wise, the 3.0i will eat dust, just read some reviews in decent car magazines. With my stock diesel I outran a Cayenne 3.0 (the cheapest one, not S), I kid you not. He was sticking to my a** and when I changed lanes to let him pass, I floored it and the guy was slowly getting more and more behind. He will even eat more dust after I install the Ac-Schnitzer tuning module tonight
IMHO, the 3.0d is the second best bangs for money, when it comes to an X5.