Hello, would like to know what you are using with your elks, depending on the driving style, route profile and what you are traveling with, performance and what model is V40 or S40. To me: coach: V40 BJ: 00 engine: 1.8L (1,783) 90kw 122PS track profile: Mostly long distance, 2/3 highway + highway rest city consumption: ~7.4L/100km since spark plugs change, before ~7.8L/100km driving style I would say economical, but speedy in acceleration.