I have an 09 E320 Bluetec. The E class that year did not have AdBlue, the GL probably did. Not a big issue, just something else to service every 10k miles.

I can't comment on towing capacity although a GL is going to be a fairly short wheelbase which has inherent issues......hard to beat a full size truck for towing.

The OM642 V6 engine is a LOW rpm engine unlike the 617 to 648's before it. Is more like a 454 V8, lugs around town at 1100rpm in 6th or 7th gear, cruises the freeway around 2500 rpm. Plenty of torque, have no doubt it can pull a trailer and when you put your foot down it gets up and gets going in a hurry. Turbo is more responsive that models before it.

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)