GLK350 Towing.

Anyone have any experience towing a small boat or trailer with a GLK350? Gas mileage? Enough torque? Any OEM trailer hitch issues? etc.

We are purchasing a GLK350 in the coming year and will be towing a 17′ Flats Skiff with it. Thanks for the input.

No towing experience with the GLK but you should have plenty of capacity for a 17 foot Skiff. Owner’s Manual lists max 3500 lbs/280 lb tongue weight. The engine certainly has plenty of grunt.

BTW, my German Owner’s Manual lists 2000 kg (4400 lbs). No idea why the lower limit in the US but that tells me there’s towing capacity well beyond the listed 3500 lb limit.

Anyone know if the cooling system is beefed up with a factory install of the trailer hitch?

I have factory hitch and not aware of any upgrades to the cooling system. That option is only about 500 bux, so doubt it includes anything other than the hitch. The factry hitch is installed very well, so def recomment to get it if you have the need as opposed to getting it after the fact.

I got mine only because the car came with it. I haven’t towed anything yet either.

MB Owner, I think the max amount is not what GLK can tow, but what Government think it can tow on public roads. So the oppinions in US and Europe might differ. I think 3500lb in US just reflects class II towing since GLK doesn’t qualify for class 3 (5000lb). It’s good to know that limit in Europe is higher meaning that 3500lb is rather conservative number, however I wonder if the hitch is different for US spec vs. EU spec car (doubt it).

3300 lbs BMW Z4 M Coupe
1250 lbs Featherlite trailer with electric brakes
———-
4550 lbs Total

A bit over the Euro spec. I have zero experience with towing. Will +150 lbs put me in the «don’t try it» category?

Above 1,500 pounds trailer weight, your trailer needs brakes.

3300 lbs BMW Z4 M Coupe
1250 lbs Featherlite trailer with electric brakes
———-
4550 lbs Total

A bit over the Euro spec. I have zero experience with towing. Will +150 lbs put me in the «don’t try it» category?

Is that for the CDI engine with the extra torque compared to the petrol 350? Do you know the corresponding maximum tongue weight?

railer tow hitch retrofitted, not with increased capacity of engine cooling or programmed Signal Acquisition/Activation Module (SAM) for Electronic Trailer Stability Control = NO GO.

2. OEM factory fitted tow hitch, zero experience with towing, 4550 lbs Total = no.

Is that for the CDI engine with the extra torque compared to the petrol 350? Do you know the corresponding maximum tongue weight?

The figures applies for the GLK 4MATIC BlueEFFICIENCY (petrol) as well. The The Permissible trailer load, unbraked, is 1653 lbs.

Maximum tongue weight is unfortunately not given in the list of technical data on the German GLK Konfigurator, and are yet to be listed in the Trailer tow hitch section of the (2013) GLK Operator’s Manual. Sorry.

I Actually did run into the Problem of the Ball being just a tad Low. What I did was went to Autozone and got a Tongue Designed for a Truck to Lower the Ball instead. I then just put the tongue on the opposite way, removed the Ball, and re-installed the Ball on the Top. This gave me a Suffient amount of Height. Don’t get me wrong it wasn’t originally Bad, the Trailer was Horizontal but the Jetski was also Horizontal. I needed more Lift on the front end of the Jetski soooooooo. 1. The Water would Drain out of the Jetski as I was Transporting it back Home and 2. With the Jetski being Horizontal on the Trailer it put a lot of Weight on the Tongue and I could see the GLK sagging at the Back end a little bit.
My Jetski is Long and the New Trailer I was Given, Brand New , didn’t put the bulk of the Jetskis weight over the Axle. I Eventually took the trailer in and had the Neck extended so I could open the back hatch while the Jetski was Hitched.
The next step for me is to get Longer Front End Brackets for the Trailer Rollers. This will give the Front Nose of the Jetski more Vertical Height and put almost all the Weight over the Trailer Axle. Right now without the Larger Front end Brackets to give Height to the Jetski, I can see the Back end of the GLK Weighed Down and I don’t want to wear out the Back End Suspension.
My 2010 Hitch and Trailer are Rated for 3500 Pounds. The GLK»s are rated for 3000 pound Towing Capacity but the Tongue is rated much lower. I think 200 pounds (Don’t yell at me if I’m not on the Money )
Anyway just a Backstory on my Towing Experience and Mods.

Thanks for Reading and if you have any other Tips for me please send.