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2007 S550
88 Posts
Discussion Starter · #1 ·

I am currently looking to purchase a Mercedes-Benz S550. While looking for one to purchase I noticed a sticker on a pre-owned 2007. The MPG for this 2007 S550 was 16 and 26. Then while looking at a brand new 2009 model I noticed the gas mileage was 14 and 22.

Further proof of this is is this link, it is a comparison between an 07 and an 09 and if you scroll down a little bit you will see the difference in MPG:

2007 Mercedes-Benz S-Class vs. 2009 Mercedes-Benz S-Class

Now, as far as I know Mercedes did not change the car at all. They still use their new 5.5 liter engine, 7 speed transmission etc.

So what I am asking is why does this difference exist, was the MPG rating in 07 possibly a mistake or does the 07 actually get better gas mileage (and if so why)?


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99 Merc S420 (80k Mi) 07 Lexus LS460 (21k Miles)
4,589 Posts
Change in EPA testing process. From old-skool unrealistic to how-we-actually-drive.
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