BMW 3 series estate Plug in hybrid: towing performance

[owlman]

Does anyone tow or know anyone who tows with this BMW or Mercedes C300e estate? I'm interested in a hybrid because we have a charger at home, but on researching these 2 cars, found out that the manufacturers de-tune the 2.0L engine on the hybrids. So how well do these cars tow when the electric motor isn't working and just the de-tuned engine is pulling the caravan and heavy car? I currently have a BMW X1 petrol and Swift Aventura caravan 1462kg, but am up for a change of towcar soon.