I have had the Solera for 5 years, kept out of Arizona sun in garage, kept up on all required maintenance so as not to negate the purchased maintenance agreement. Backup camera and electric leveling jacks are added options. 2009 was pre DEF, fuel mileage on last vacation trip was 12 to 15 mph depending upon wind and elevation. Six 60000 mile Michelin tires put on 11-02-2017 at 45,318 miles. Bought from Discount Tire, tires rotated every 10,000 mile oil change. Two maintenance free 12 volt house batteries purchased from Batteries Plus 02-21-2020. Non maintenance 12 volt chassis battery purchased from NAPA 12-03-2020. Upgraded to larger motor home. My name is Tom, call or text me at 602-413-2953, if I can't answer, please leave a message, I will get back to you as soon as I can.