This type of plan typically involves paying a deposit then low monthly instalments over a fixed period.
at the end of this, you can either pay a lump sum (‘balloon payment’) to purchase the car outright, return the vehicle or sell it privately to pay off the remainder.
be aware that: it’s important to stick to the agreed mileage limits and to keep the car in good condition to avoid penalties. You are hiring the car and will not own it until the balloon payment is made. It may be less cost-effective than CS if you plan to keep the car, however.