I currently have a 2011 Mercedes E250 CDI Estate, which has nearly done 100,000 miles. I do around 24,000 miles a year, mainly commuting on B roads to my business. I use it to carry stock between two shops I own and also as a family car, two kids and black Labrador. It really comes into its own on holidays as it can carry huge amounts of luggage without the need for a roof box. However, it's not the best for the types of roads I mainly drive on and I am looking to change the car next year with a £12k budget. It never seems to go more than two or three months without needing to go the garage for some fault (mostly minor ones) either. I'm looking for a reliable, used estate - probably diesel due to the number of miles I do and I would prefer a manual gearbox. What do you suggest?