Is there anyway for me to increase my gas mileage for my used 2011 Volvo S60 T6 (120k miles)?
I do a mix of city and highway 50/50, and my average is now 16.2 mpg.
When I spent a weekend upstate and drove mostly highway, the max I was able to get was 19.
Is there anyway to improve this? I've already changed spark plugs, and air/cabin filter.
Also, occasionally my car smells like gas/fuel when the air is on, but the AC is off. No longer smells like gas/fuel if AC is on.
Is this somehow related?
My mechanic was not able to find any leak.
Please help! I'm contemplating selling it due to the these problems.