ideas to improve economy on any car - 1) smaller wheels with narrower tyres reduces rolling resistance 2) choice of tyre affects economy 3) tyre pressues - ensure they are correct or a fraction higher as slight over inflation reduces rolling resistance again 4) remove any excess weight from the car - random crap we all keep in cars that you never use, just take it out 5) dont use the AC as that increases consumptions 6) turn off any electric device you dont need as this draws current which increases alternator load which increases engine load 7) manage gear changes and anticipate what the traffic is doing - if its a manual do not slip it in to neutral as you coast, keep in gear. You want to try and keep the car rolling and basically avoid first unless you are actually stationary 8) be sure you use the right gear - think you do better at 40 in 5th than 4th? (based on my 5 speed S60 2.0T) wrong. Due to you having to press the pedal ever so slightly harder to maintain momentum you actually use more fuel.
If you stick to just driving like this I have seen an average of 46.3 out of my 2.0T. Problem is i get bored and end up keeping crap in my car and it was hot today so I'm only getting 34.1
Must do my tyre pressures..
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