please read BlueWicked's sticky thread on this. I have to agree with nookster, it depends on how much you value your horses lives. Yes, you could humpf around a trailer with a freelander or x-trail but no, it would not be safe nor legal.
You need to look at the maximum laiden weight of your trailer, which will be on a plate on the chassis. the 510 is the bigger of the two with a max laiden weight of 2700kg. your tow vehicle MUST be able to pull that weight, whether you have the box full or NOT. the x-trail and freelander just do not cut the mustard. even the brand new freelander has a MAXIMUM towing weight of 2000kg, nowhere near the max laiden weight of a 510. the x-trail varies from 1350-2000kg, again really not up to the job and illegal with the trailer you want to tow. i suggest you have a look at the sorrento, terracan, landy defenders/discos, nissan terrano etc. the proper, beefy tow vehicles that all have a 3500kg tow capacity.
Do remember, towing with an underpowered vehicle will put tremendous strain on it, and your maintenance costs will be big. something like a sorrento isn't in the highest tax banding, fuel seems not too bad and with a decent warranty behind them they are worth looking at. and you'll EASILY find one for £6k
You need to look at the maximum laiden weight of your trailer, which will be on a plate on the chassis. the 510 is the bigger of the two with a max laiden weight of 2700kg. your tow vehicle MUST be able to pull that weight, whether you have the box full or NOT. the x-trail and freelander just do not cut the mustard. even the brand new freelander has a MAXIMUM towing weight of 2000kg, nowhere near the max laiden weight of a 510. the x-trail varies from 1350-2000kg, again really not up to the job and illegal with the trailer you want to tow. i suggest you have a look at the sorrento, terracan, landy defenders/discos, nissan terrano etc. the proper, beefy tow vehicles that all have a 3500kg tow capacity.
Do remember, towing with an underpowered vehicle will put tremendous strain on it, and your maintenance costs will be big. something like a sorrento isn't in the highest tax banding, fuel seems not too bad and with a decent warranty behind them they are worth looking at. and you'll EASILY find one for £6k