I wouldn’t be concerned about the cylinder configuration of a particular engine. What’s more important is how much power and torque that engine makes, and how towing-friendly that power delivery is. By which we mean how smooth and flexible is the delivery. What you don’t want is a peaky engine that needs to be revved before it delivers the good as that puts a strain on everything and make the vehicle tricky and unpleasant to drive.

The good news is that all the vehicles you’ve nominated have good, solid powerplants that are well suited to towing a caravan. Modern turbo-diesels – especially with an automatic transmission – are ideal for this task.

What you should go for, however, is the vehicle with the highest towing rating. In this case, that’s any of the Grand Cherokee, MU-X or older Discovery, all of which have variants that can handle a towed load of 3.5 tonnes. The Everest is almost as good with 3.1 tonne, but only almost. The problem is that the van you’ve nominated can easily weigh between 2.2 and 2.8 tonnes which, with a 3.1-tonne limit, leaves you very little headroom for water tanks and camping gear. You’d be amazed at how much a fully loaded caravan weighs, so don’t rely on the brochure, load the van and take it to a weighbridge to make sure the vehicle you have can legally tow it.

Land Rover still refers to the third-generation, L462-series model as the Discovery 5, but the number was dropped in some markets to distance it from the L319-series LR3 and LR4, which were the North American names for the Ford-era Discovery 3 (2003) and Discovery 4 (2009) respectively.

Though not officially confirmed, it is believed that the name change in both instances was due to the poor reliability reputation that the earlier models gained. The same fate befell the Freelander badge, when its successor became known as the much-more-chic Evoque.

Thank you for getting in touch.

Indeed it will so get in quick.

With its mix of classic Range Rover and a Rover Group parts-bin bits, Morris Marina door handles, Austin Montego van tail-lights and Buick’s ancient alloy V8 all part of the mix, this thing is pre-BMW/post-BMC era British engineering genius.

Also, the original Disco is cool, with its lovely two-door wagon body, stepped roof with skylights and airy, inviting cabin offering minimalist, attractive design. And please don't forget the Land Rover's formidable 4x4 capabilities.

All-in-all, a '90s classic worth collecting. Land Rover doesn't make 'em like this any more.