Volvo XC90 (newer version 17,18) I drive local+high way ave 29 m

The new Volvo 2.0 engine 4 cylinder with turbo/super charge that provide very high gas mileage.  Also, less troble.  I also have old 05 S80 still runs like new.  Avg 25 mpg.  13 years only change cooler without other issues.