Nissan Navara Problems

I agree with the advice you've been given, go up to high-range and get out of the problem area

I'm not sure what dimensions you are looking for, but it's 5296 mm long, 1848 mm wide, 1795 mm high, the wheelbase is 3200 mm, the front track is 1570 mm, the rear track is 1570 mm, its kerb weight is 2017 kg, gross mass is 2805 kg and its braked towing capacity is 3000 kg.

It's unusual to have a major failure of the front diff, unless it has been left in low range four-wheel drive on the highway. If that hasn't happened I would request a full explanation of the reason the diff has failed.

It could be a number of things, like the suction control valve on the fuel pump, although that's unlikely given that the pump has been replaced. It could be a problem with the fuel rail pressure sensor, but the first thing I would suggest you try is clean the Mass Air Flow Sensor in the intake.

The new HiLux and Triton will arrive in the first half of next year. If you're planning a five-year run for your new ute it would be worth waiting to see how the pecking order changes once they're in place.

The kilometres done are about what you would expect a vehicle of that age would have done, but the price is high. I would think $13,000 to $15,000 is more reasonable. With a 3000 kg towing rating it would comfortably tow your caravan. The things to be aware of are low clutch life and high cost to replace them, and failures of the cam timing chain. The latter is generally put down to poor maintenance, so make sure yours has a credible service record showing regular oil changes.

The Ranger gets The Tick and is a clear winner from the Amarok. The all-new Navara is not even close. But we're expecting a new Mitsubishi Triton and Toyota HiLux in the first half of 2015, so check back nearer then.

The great thing about the motor trade is that there are lots of clever mechanics that are able to fix problems that the carmakers seem to be unable to do. It's always worth asking a specialist mechanic for help.

Injector wear is a problem with all common-rail diesels, not just the Nissan. You should be able observe rough running, perhaps black smoke from the exhaust, and high fuel consumption. The chip won't be causing your ticking noise; that will be a mechanical noise. You need to determine where the noise is coming from to be able to locate the cause. One thing I would be looking at the camshaft timing chain, they wear and sometimes break on the Navara, and that's one possible source of your ticking noise.