i bought second hand suzuki swift 2015 , 50k running. Full fuel tank lasted 320km only, giving me a avg of 7.5-8Is this the maximum i can get ?any tips on increasing efficiency ?
i have a manual 2016, 120k driven, on long i get around 17 and locally 13-14.the oil i use is havoline fully synthetic 5-30 and change spark plugs after on every second oil change, oil is exp but i change it at around 8k.