2L goes OK towing but drinks - you gotta be a bit ruthless with the right boot to get it to go OK with a load on but they will pull. Where I don't like them is if you have a heavy trailer - my driving feeling is virtually no engine braking assist and you gotta be rather conservative in the hilly stuff. The upsey-downsey rule is in force and if you don't follow it you can get a bit of a fright if you have to drag the thing to a complete stop or control the speed on a long roll downhill.
The other thing I found with them is with a long heavy trailer and connecting up at anything other than straight, they suck at getting it moving especially if you are trying to back up a rise around a corner from dead stop. The engine and gearbox just don't allow the revs to get up and the little sewing machine struggles for grunt at low RPM. But, to be fair - I have found the same issue with auto boxes behind anything in the same scenario as you don't have the third peddle to punish to make it easier for the turning bits up front to get everything moving.
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