On February 1-3 I drove from Bellingham. WA to Indio, CA in my standard dual motor, long range MY mostly using I-5 ,1420 miles spending two nights in hotels. I used 484 kW that cost me $162.96. I drove 5-10 mph over the speed limit and it was cold as West Coast cold goes. My tires were 1-2 lbs under pressure and I have stock everything. Last May I drove the same route faster but warmer in my LR M3 and only spent $89. Do I have a problem?