Land Rover Discoveries are known to go into limp mode. Especially the discovery II. Don't get one of those as you will have a lifetime of problems.
If you get a landy, get one of the defenders and before they do the planned upgrade to the model because it is all but an upgrade.
In sand you need more kW than torque. Higher revs so to speak. When you drive very slow and on difficult terrain such as rocks or through axial twisters a diesel will be better. That is purely because you have enough torque at very low revs. The slower you can go through any obstacle the less chance you have of damaging the car or yourself. You don't need tons of torque to drive most places, just enough to have control.
Any 4x4 that does not have low range and at least a rear diff lock, not just a centre diff lock, is not a 4x4.
A landy defender is the only true landy
A disco is another luxury vehicle . Fantastic , but.... Hmmm
And don't listen to the nonsense about a Landy using oil etc . Mine has done 138 000 kilometers , and I have not found it necessary to even top up oil in between services - every 20 000 kilometers -( I do not think that ANY other brand can boast with such a record ) Average fuel usage 9,25 km/ liter fuel .
For sand .... also , too much kw can cause spinning of wheels which digs you in deeper . So use a higher gear , not necessarily the low ones . And make sure you deflate the wheels on sand because makes your track bigger and weight distribution is over a bigger area . Especially the Landy , which is a very heavy vehicle , weighing almost 2000 kilograms , and rated to pull a trailer of up to 1500 kilograms .
To explain this - you may not pull a trailer with a total vehicle mass ( including load ) , which is more than the gross weight of the vehicle itself .
Most bakkies have masses of around 1200 to 1300 kg , so there not allowed to pull anything heavier , and the manufacturer actually stipulates this too .
With the Landy at such a nice sturdy , sold weight , and taking into account the maximum size vehicle you may drive with a code 8 driving license , which is 3500 kg , allows you to pull a fairly heavily loaded trailer/caravan .