I've been tracking the mileage on my 2015 VW Golf (a non-intercooled turbo, but not diesel, thank goodness). Of course, my driving habits and highway/city balance influence things greatly, but beyond that the data seems to show significant and durable changes in the mileage I'm getting.
So, I'm wondering: what other factors might influence my mileage in the long term? Some possibilities:
- Persistent changes in outdoor temperature (e.g. summer versus winter)
- Tire pressure
- Engine break-in
- Oil changes, or type of oil
Let's assume my car has no malfunctions. I'd also be interested in which factors might have the greatest effect.