Can I tow a caravan with my 2018 Renault Koleos?

It somewhat depends on which model Koleos we’re talking about. For some strange reason, both the two-wheel-drive and all-wheel-drive versions of the Koleos have the same towing capacity. Even stranger is the fact that the much torquier turbo-diesel version of the 2018 Renault has a lower towing limit than the petrol-engined version with its peakier powerplant.

So, on that basis, the turbo-diesel Koleos has a 1650kg braked trailer towing limit. Which neatly rules it out. The petrol version meanwhile, can legally tow 2000kg so theoretically, you could use it to tow an 1800kg caravan. In reality, though, the petrol Koleos won’t do so effortlessly or (as you’ve described it) easily. In fact, it’ll be just about at the limit in terms of its performance and braking and the CVT transmission will really be earning its keep on hills. To be honest, there are better choices for this type of use.