What phrase is used nowadays to describe something that is just average?

You're on the correct road if the word "meh" comes to mind. The fact that a Mercedes-

Benz car is being described with this classification is unexpected. 

 the word "meh" perfectly captures the sales and resale stats for the Mercedes-Benz GLB.

It takes some time to locate the Mercedes-Benz GLB when you scroll down the sales 

numbers offered by GoodCarBadCar. Actually, along the road, you'll pass a number