We purchased a used kia sportage from their derby dealership initially the experience was positive unit the issue with the car using all its oil in 6 weeks of purchase. The car has since used 12 litres of oil since September it has been back to kia 3 times each time with excessive oil consumption with no oil leaks the second time the car broke down 50 yards from the gate of the dealership after picking it up due to incompetent repairs the car has full kia service history from this dealership and is still under manufacturer warranty but kia derby has now told me that I have to sign for over £1000 of diagnostic work before they will assume work is covered by the warranty. This entire saga buying a car from this dealership has put me off kias totally we car currently taking the car to an alternative kia dealership to see if the experience is any better ...but I must add that just talking to the alternative dealership service department I think a resolution may be possible ...but o would recommend avoiding NK kia at all costs.