We just got back from CA and I only checked the mileage once on the trip and it was 9.5 MPG. I wasn't towing my Yaris, it weighs in at just over 2300 lbs. When I have towed it with the Aspect, (V10 also), I usually averaged between 8.5 and 9. I will be towing it behind this 29D to Durango next month and am looking forward to seeing what it will get. I always use premium even though the manual says 87 octane because I do a lot of traveling in the 'high' country of CO, NM, UT, and the Pacific Northwest. I've never had a problem with the 2008 Aspect the four years I owned it. The reason I bought a Yaris for a toad, the only thing lighter is a 'Smart' car and it just seemed to small.