Very impressed with the 39.8 mpg on a recent 419 mile mostly highway run between Ohio and NJ using shell v power 93 octane gasoline. While the average speed was 58 most of the highway run was at 70mph in C mode. My 2019 GLA 250 is one of the less common 2 wd. A little concerned about the analog water temperature fluctuations between the 7 and 11 gauge tick marks though. Curious what others are seeing.