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Fuel consumption got better after cleaning acceleration, changing faulty vvt and cleaning pipes. Volvos have this problem, especially diesels. They have electronic gas pedal. And it gets super dirty. That’s why they have rough idle.
My dad has original sub and better sound system on his xc70. Also 2.5 blocks are known for cracked blocks, due to thin walls. The best is 2.3 block, but it’s almost impossible to find good, original shape.
That consumption is pretty good for a 2.4t I think. Did a lot of research on these a few years ago and with mixed driving it seemed to struggle to get below 10l/100km
Almost bought a 2.5t but backed away when the seller tried to explain to me why his car was one of the few cars that shipped with the premium sound system but without the sub.