surfstar
Veteran Member
I have a 2016 GSW 1.8 TSI - my AVERAGE mpg has been 38.48 over 44k miles. Not 'computer' estimated. Refilled # of gallons and miles tracked every tank.This has been my experience with all gassers, in general, and why I now take claims like DieselMann99's of 40mpg trips with a grain of salt.
In my diesels I've just never really seen a huge dip in mpg when I'm traveling over 60mph whereas with all my gas cars the mileage efficiency drops significantly (and quickly) as speed and/or weight are increased.
Our road trips consist of a loaded down wagon with camping and climbing gear (heavy enough that I added coil helper air bags) and we start from sea level, ending up at 4k to 10k feet depending on the destination. I set the cruise control for 74 mph on HWY 395 for much of those trips. Local short trips from the campsite to climbing also should hurt mpg. We usually average 40+ mpg roundtrip on those.
Key factors:
5spd manual GSW (outdoes the ATX from all reports I've read)
I've added underbody aero panels from hybrid/euro VWs
potential mpg helper: I run LC20 in the oil and RLI Bio-Syn in the fuel (used to keep the oil/gas systems in top shape, who knows if it actually does anything)
I drive smartly, but am not afraid to do a full-throttle pull to keep the engine exercised when available.
I'd love to see how a 1.4T GSW would do with the same conditions. Possibly a 10% increase?
Anyways, these 5spd TSIs are underrated for EPA mileage. Very easy to exceed.
Just another data point