Your cars getting on for 2 years old, you should get a bit more than you've been offered but it shouldn't come as a surprise as options count for little come px time and thats the way it works im afraid, you should know this when buying a car, but it is still hard to take i know. Your car prob was about 24k basic when new so 4k a year ain't to bad, that is pretty good really on a brand new car.