Do this properly.
Where do you want to go on it?
Will you want to put it in the car?
What do you weigh?
Will you want to go off road?
How good is your upper body/arms/wrists/shoulders - scooters don't have power steering so if you have weaknesses there this might affect your choice of scooter.
Some scooters are ace, some are awful.
When you've got all your answers to the above, start looking up various kinds of scooter and get a good feel for what there is available.
Scooter plus points - on a four wheeler with the steering column in front of you, you do feel pretty safe and secure.
If its on the flat/pavement/around shops then steering isn't likely to be difficult.
There are smaller scooters around that will fit into small spaces like in your car, in your house etc.
Scooter downsides...
They have a large turning circle even for the small models.
You cannot get most of them off a kerb, and those you can you'll need to hit the kerb straight, not at any sort of an angle.
Most pavements do not have room to get a scooter pointed straight at the kerb, nor do they have room for you to turn a scooter around!
If you live somewhere with not many dropped kerbs then you need to plan routes carefully or spend a lot of time reversing.
Lots of scooters are sold as going off road, doing grass, gravel, sand etc - in reality VERY few will actually do this and those that will are likely custom models you can expect to pay upwards of 9K new.
Those that will do the above are unlikely to fit in a car.
Lots of them are sold as being fit to keep outside under a cover or in a shed - don't do this they will be knackered by the damp, they NEED to live indoors.
You can pick up second hand scooters but factor in that many have been abused by being left to go flat, (batteries do not like this) and being left outside. If you are going second hand, assume you'll be buying new batteries and factor the cost of that in before you buy.
They do need servicing annually, and I would recommend insurance too!
I loved mine, I had a Horizon Mayan AC for several years before my upper body mobility failed and I could no longer steer it if it wasnt on smooth flat pavement. It was a big off road model with chunky tires though.
I am told that people gave me evils when I was on it, I never noticed and likely this is because I am very obviously fat... I just smile at everyone and say hello oblivious and if they have been given me evils they soon stop!
You can get sales persons to fetch models to your home to try out in your chosen environment - don't be shy about getting them to bring the scooter to where YOU want to use it. And run a mile from anyone who refuses to do so, they do that when they know their scooter wont do what you want it to do.
They will (outside of the high end custom jobs) often make promises for what it can do when it really can't so prepare a script that you have other models to try and will NOT commit to buying before you've tried them all.
It can be good to try out new ones and then buy second hand - don't feel guilty doing this, their prices are vastly inflated, they recoup the cost of mucking about fetching things to folk who don't buy very easily, its all part of the game!
Many sellers also deal with second hand models anyway and many are bought on finance and then resold when the buyer no longer needs them, which sadly happens often as peoples mobility fails or people die (my friend has a wheelchair worth 11k, almost new, used for a few weeks then the owner sadly died, she got it for under 3K from a dealer).
Do be aware that folding lightweight models are often flimsy and the more folding/moving parts there are, the more there is to fail!
I think that concludes all my mobility scooter knowledge... if a scooter ISNT for you.. ask to be referred to wheelchair services to see if a wheelchair is a better fit.
PIP will cover motability payments, if you have the mobility payment, and Motability now do several power wheelchairs.
Do NOT feel that because you can stand and walk some ofthe time that a wheelchair is not for you - there are in fact MANY more ambulatory wheelchair users out there than there are full time permanent wheelchair users. It's just that the media tends to focus on teh full timers rather than us part timers!