GL550 or ML63 ???
1. Practicality/ utility. No question the GL550 wins this comparo. The tire setup, while not exactly great suffices for most winter driving whereas the ML63 will need a set of winter treads.
2. Performance. No doubt the ML63 is a rocket, but it's an SUV! Despite the contuinued improvements, ultimately the laws of physics are going to limit one's ability to fully drive this at the limit. My advice if possible is to have a sports car backup!
The GL550 is no slouch by the way...3. Looks. Outwardly both vehicles have similar AMG styling. IMO the GL550 distinguishes itself better. MLs are a dime-a-dozen around these parts.
As mentioned, you will rarely get to use the full potential of AMG anyway.
The GL is the obvious winner because of its size, versatility, and its efficiency. I too looked at the ML and R AMG's but the GL really caught my eye.
Completely agree with emayer on the performance SUV not substituting for a sports car. After you get over how fast the ML63 is the differences in comfort from the GL550 will be hard to deal with
And now for something completely different. For my next utility vehicle, I'm starting to look at wagons. The E63 comes to mind, but a more practical wagon might be a better fit for me. The BMW 535xi has AWD, accelerates 0-60 in the mid 5's, should handle better, and gets 7mpg more on the highway than the GL550.
I drive a GL450 daily, and much prefer the extra room & smoother (to me) ride. It certainly doesn't have the pep of the ML550, but it's no slouch. Had the GL550 been out when I got my 450, I would have had a tough time deciding between the 2.
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I think on the right track. Aside from the GL550 we have an E500 wagon which I presently use as a daily driver (wife stole the GL550!). I find the wagon a great drive and a wolf in sheep's clothing... Gas mileage has been 18-22 range for mixed cycle driving which isn't bad either. I would be a repeat customer for sure if MB were to bring the next version E550 wagon stateside. Keeping my fingers crossed that the beancounters will see the light...
This is a bit off topic, but my GL 320 spent the night at the dealer (battery got low voltage and had to be replaced under warranty). Anyway, they gave me a fully tricked out ML 320 to drive overnight. I was really impressed with the way it drove and the peppiness of the 3 liter motor in the lighter weight car; the motor felt better matched to the lighter weight. It was similar to the GL but handled better and accelerated faster. If I did not need third row seats, this would be the way to go. I mean, it had everything my GL has except the rear seats. And it was $16K cheaper on the sticker than my GL...
Also, longterm resale value and overall comfort is said to be on the side of GL.
If you had the upper engine power of other GL models, you would likely have the same or better impressions with what you experienced with the lighter ML (and still have your third row seat).
Might even take it up the road to RennTech and have them add a little more low-end umph. The great driving-friendly mannerisms of GL also are a strong plus.With her subtle driving method, she will probably get the best fuel mileage of any GL in the country.







