gIzzE
MB Enthusiast
- Joined
- Jan 20, 2004
- Messages
- 5,735
- Location
- Norfolk, UK
- Car
- BMW F11 Touring + Porsche 911 Carrera S + Toyota Alphard Camper
Can honestly say I get the same ish miles ever time I fill up with 95 Ron, V power or ultimate.
210 ish to a tank on my daily commutes.
It can take a couple of tankfuls to get the timing back to normal when using 98ron, however, it only takes a 1/8 tank of 95 to get it knocked back again.
There was some graphs on the C63 posted a while back, it was a big hit, something like 35bhp loss. Also around 10% loss in MPG too, so no financial benefit to running 95ron.