We have driven from Indiana to the Florida Keys 3 times and to Texas twice. The highway ride is smooth and comfortable. Gas mileage can be as expected, but the power on the highway is really nice! The only problem we ever had was an oxygen sensor, but that was replaced under warranty. We now have just over 53,000 miles on the Durango. Runs so quiet at idle I have to check rpm to know it is actually running. We change oil every 3000 miles and rotate tires every 6000 miles along with any other services shown in the service handbook.