We're a bit disappointed ... we thought this would be way hotter!

After the infamous Nipplegate and some controversial commercials in the past, it looks like advertisers are taking it easy with their Super Bowl ads, as evident from this lukewarm Mercedes TV spot featuring full-figured Sports Illustrated hottie Kate Upton supervising some young men washing a CLA-class sedan.

We'll have to wait until February 3 to see the commercial in its entirety ... hopefully that won't be a total waste of our time!