I purchased my Antara (pre-reg 64 auto) in March and have the Lifetime warranty with it so have to keep it main dealer serviced. I enquired about a service plan at my local Arnold Clark retailer and insisted on manufacturer servicing and parts so the warranty would be renewed annually on presentation of the certificate from Vauxhall along with my logbook. They quoted me £742 for the first three services, a brake fluid change at 3 yearsplus the first MOT but if I bought a service plan it would be £419. Needless to say I bought the plan after I assured them I would only accept a Vauxhall service sheet with my documentation. I was assured that only original parts would be used and this was backed up by a technician I know who works there and knows I am a fussy pain in the backside. Give them a try.