We have a 2017 Volvo V90 D5 that has done 50,000 miles. It is bigger than we need.Given the price of second hand cars we wonder whether we should just look to get a new car (trying to negotiate a discount for cash) on the basis ours may have increased in value as well. We would then sell the V90 on through an organisation that buys cars if necessary. A mid-sized estate (such as a Golf) would suit us well. Do you have any advice on our approach and any suggestions as to what we should consider? Our budget is probably £18,000 to £20,000. Due to infirm knees we would prefer an automatic.