They have a electronic mpg on the dash. 18-19 is a strech for those 5.7 the new ones clame 16-20 mpg but the 07 to 09 are claiming only 14 to 17. My buddy just bought an 08 tundra and he was only geting 16 before he lifted it now its more like 14. Not saying you cant tow with your tacoma dc but its not going to tow that great at 234 hp and 266 ft lb of torque. Just saying. Nothing against your truck there great but its less than the first gen tundras towing capacity and those needed a towing brake to tow any fifth wheel. My 2.7 tacoma will tow a drift boat no prob