The bottom line here is that even if the vehicle was incredibly cheap, you might find it’s a false economy once you have to start making repairs. Regardless of what make or model four-wheel-drive you’re looking at, the first thing to do is determine how it’s been used and how it’s been serviced. Check the service handbook for signs that correct maintenance has been performed, and try to gauge how much off-road work it’s done. Any example with mud tyres and a winch can be assumed to have led a hard life.

On a model-specific basis, this was not Nissan’s finest hour in turbo-diesel engines. The 2.5-litre four-cylinder diesel is notorious for suffering stretched and failed timing chains. And repairing that could easily be more than the value of a 300,000km example. EGR (exhaust gas recirculation, part of the emissions-control equipment) coolers can also fail expensively. There are better choices, to be honest.

There are many reasons, some mechanical, some electrical, why a vehicle won't select four-wheel-drive when the driver requests it. But the first thing we'd check would be the electrical connections from the rotary dial on the dashboard and the mechanical components that dial controls.

In the old days, four-wheel-drive was selected by mechanical levers that moved the internal bits of the transfer case to the correct position to engage the front driveshaft and, in turn, the front differential and axles. But in your Pathfinder (and many other makes and models) manufactures started using electrical switches instead of actual levers. The idea was that by electrically controlling this function, there was less effort required from the driver. The reality is that these dials are as susceptible to electrical gremlins as any other part of the car.

Check the fuses that protect the selection dial and if that's not the problem, have the rotary dial itself checked for faults.

A car with a little extra ground clearance is great for camping as it often allows you to get a little farther away from the masses in their caravans who tend to huddle around the shower block at bush campsites.

The Subaru Outback is a good, solid choice and if you can find an independent workshop to service it, you’ll avoid the cost of dealership prices. And you’re right, the all-wheel-drive would be great for gravel roads. Another vehicle to look at would be a late-model Ford territory diesel which is big and clever inside and has the option of all-wheel-drive. The diesel engine is a plus on the bush where that fuel is more readily available (in really remote areas) and gives you more range for big holidays in the mulga.

Don’t rule out things like the Mitsubishi Pajero, either, which won’t be as around-town friendly, but is a proven quantity and is absolutely tremendous off-road. The same goes for a Toyota Prado or Nissan Pathfinder prior to the current model (which is a bit less hard-core adventure).