Once you have signed the contract, can you cancel?
The following is from the terms and conditions, once you receive the vehicle you can return it for a full refund as long as it is only basic factory specification with no options. All depends on country you are in.
Edit : Apart from the above I believe if you cancel after signing the contract you would lose your deposit.
1. Right to cancel
1.1 If you are a consumer to which the Consumer Contracts Regulations 2013 apply and have entered into this Agreement by only using means of distance communications then, subject to the below you will have the right to cancel this contract without giving any reason within 14 days after delivery of the Vehicle or after it is made available for you to collect.
1.2 To exercise this right to cancel, you must inform us of your decision to cancel this Agreement within the 14- day period as specified above. This notice of cancellation must be provided by a clear statement sent to INEOS by post or email (see our contact details in the Contract Particulars). You may use the model cancelation form below to communicate your decision to cancel this Agreement but please note that it is not obligatory to use this specific template.
1.3 The rights of cancellation do not apply where the Vehicle has been built to your customised specification or have been personalised for you.
2. Effects of cancellation
2.1 If you exercise this right to cancel, we will refund all payments received from you including the cost of delivering the Vehicle to you (except for the supplementary costs arising if you chose delivery over collection or a type of delivery other than the least expensive type of standard delivery offered by us). We may make a deduction from the reimbursement for any loss in value of the Vehicle supplied resulting from unnecessary handling by you in accordance with the law governing this Agreement (i.e. if you have used the Vehicle beyond what is necessary to check the nature, characteristics and functioning of the Vehicle). We will inspect the Vehicle at the time of return and will deduct from the refund the amount required to return the Vehicle to the condition it was in at the time of delivery, including, without limitation: a usage charge of EUR 0.55 per kilometre or the equivalent in your local currency if you have driven your Vehicle in excess of 100 kilometres (60 miles); repair costs for any damage to the interior and/or exterior of the Vehicle; cleaning costs in case of any stains, dirt, odour, or soiling attributable to your use that are beyond what can reasonably be expected from your inspection of the nature, characteristics and functioning of the Vehicle.
2.2 Unless you have expressly agreed otherwise, we will make the reimbursement using the same means of payment as you used for the initial transaction. The reimbursement will be made without undue delay, and not later than 14 days after the day you provide evidence that you have returned the Vehicle, or (if earlier) 14 days after the day you provide evidence that you have returned the Vehicle.
3. Returning the Vehicle
3.1 It is your responsibility to return the Vehicle without undue delay and in any event not later than 14 days from the day on which you communicate your decision to cancel this Agreement.
3.2 We will withhold the reimbursement until we have received (a) the Vehicle, which must be in the same condition as when it was delivered to you; (b) all paperwork relating to the Vehicle; and (c) paperwork relating to the transfer of ownership of the Vehicle from you to us. You will have to bear the direct cost of returning the Vehicle us. You will take full responsibility for the safe return of the Vehicle including its tax, insurance, and the resolution of any fines, charges or penalties until it has been accepted back to our premises. The Vehicle must not be driven from the date you notify us of your cancellation, other than to drive it back to us.
3.3 The Vehicle can be driven to us to the Point of Delivery address listed above.
3.4 When we have received the Vehicle at our premises, we will inspect the Vehicle and will deduct from the reimbursement to you the amount required to return the Vehicle to the condition it was in at the time of delivery to you.