If you are in the market for a used semi truck, you need to take fuel economy into account. Although it's impossible to get a semi truck that is completely fuel efficient, there are attributes that you can look for that will save you money in the long run. While you're shopping, look for these features:
1. Trailer Tails
When shopping for used semi trucks, look for ones with rear tail fairings or trailer tails hanging off the back end of their trailers.