Originally Posted by
72qtrex
This may upset a few on here, but from first hand experience I would not consider towing that sort of weight with a 3.0 turbo diesel, unless it had an auto transmission.
I have tried towing a 4.4m tinny, very heavy 3 inch channel steel trailer, with a 3.0 TD Navara, when you get to a steep boatramp you have to abuse the clutch to get the show rolling. There is a thread on here where a bloke driving a Colorada, has burnt his clutch out after 15 000kms, and not covered under warranty. Also towed a scissor lift on a trailer, with a 3.0l Hilux, approx 2 t, on a small hill could not get it rolling and had to select low range. I can not understand how these 4cyl diesels are rataed to tow so much, fine on level ground but throw in a small slope and it's another story. I think the manufacturers just try to put a towing figure greater than the next manufacturer, tricking buyers into thinking their vehicle is more capable than it really is? These things have no grunt before the turbo spools up, from my experience, and the manufacturers back me up here by not offering a warranty on the clutch.
By comparison my 4.2 6cyl diesel can drag a much heavier boat up the same ramp which the Navara struggled, with less than 1000rpm onboard no clutch fanning required. Try that in a 3.0l diesel in high range and see how you go. I see many people towing with these small diesels and wonder do they never stop on a hill or have no mechanical sympathy or are they running an auto transmission?
To answer the initial question - 3.0l Navara approx 1.5t boat and trailer - 14 litres/ 100km, avreage over 5000km trip.