Finally got to tow the viper today. Did a small 45ish mile loop with a lot of traffic going back one way and lots of hills, still averaged 17.5mpg. I honestly think it will get close to 20 in normal conditions. Trailer plus viper is pretty light though, it should be around 5k pounds. I will be towing it 3000 miles across the country in two weeks so I will be able to give a better mpg and towing opinion soon.
Edit: also so far in the 3.5k miles I've owned the truck have averaged just over 20 with most of it being city driving.
Edit: also so far in the 3.5k miles I've owned the truck have averaged just over 20 with most of it being city driving.
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