Quote Originally Posted by Mstevo View Post
Compared to a 2.5L T30 X-trail, although Tiguan is more fuel efficient, the end costs are almost the same, as X-trail takes cheaper 91 octane while Tiguan drinks the more expensive 98 variant. I've always run 95(usually 10-15c/ltr dearer bloody oil companies) in the Xtrail it gives much better consumption numbers and power, Interesting you run 98 in your Tiguan the specs say 95. I'm worried that the unladen highway cruising numbers are very good the loaded towing numbers might be appalling, the Xtrail tows best and gives best fuel consumption at 113km/hr(GPS)
95 is the minimum required, I run 98 because the throttle response feels more immediate than 95. The same reason you run 95 on your 91 rated X-trail I guess.

I would not stress over the towing fuel consumption, as Tiguan has more torque at lower revs. You will be cruising at at least 500 rpm lower than the X-trail. Even if a stock Tiguan is not torquey enough for you, a simple APR upgrade will have you laughing all the way to the race track.