What is the highway mpg with Stage 2 and delete? Of course it will be less around the fields of my farm, but it
I am very happy with the economy, everyone drives differently and in different conditions but on a recent trip to Calgary and back, about 525 highway miles one way, I used 10.8 us gallons over 555 miles for 51.4 usmpg and on the way back I used 9.96 gallons over 525 miles for 52.7 usmpg. Obviously I was driving quite conservatively, sometimes cruising just under 110 km/hr (68 mph) but also with about 200km each way, (125 miles) just under 60 mph. Interesting part was running the last section into Calgary on an apparently level section of road with the economy readout steady at about 3.5 l/100km and the speedometer needle sitting just under 120. Scratch head, that’s 78 mpg! I must have been delusional and not realizing I was downhill with a tailwind. The final reading was actually pretty close to the calculation both ways.
The car has a fresh timing belt, new thermostat and wheel alignment. Before all of that I considered 43 mpg to be normal highway mileage with the tune and delete. I’m also running 215-55-16 Passat wheels/tires, with the cluster coded to recognize the larger tires. The cluster speedometer reads 6% high while the Polar speedometer reading which bypasses the cluster ’adjustment’ is very accurate as far as I can tell from GPS comparisons. I’m assuming that means the odometer is accurate. The claimed distance to Calgary is about 50 km less than I measured but I had three detours along the way plus I was going to the airport which meant I had to drive completely across town. I don’t think the odometer was out by more than 2% at the most, probably less. The speeds above are from the Polar.
I think the mileage I saw really requires the stars to align well, but it is also just about the same as my BEW’s best performance on the same trip.
BTW I really like the tune. Smooth and loads of power but it doesn’t feel like you have to use it. Just surprises on those passing maneuvers when the other vehicle gets sucked backwards.