My son did your routine with his VW Jetta for about 3 years and then sold it wishing he'd done so a lot sooner. Some things he learned. VW's have a well known larger battery drain than other cars, never found out why. If you let it drain too far you'll find your battery toast. VW's can get mold inside when sitting too long. With yours in a covered garage this might be less of a problem. My understanding is that this is not uncommon with a number of cars and that routinely opening doors and driving them dries out the areas where the mold begins so that's why it's not considered a real problem. Insurance is a lot less for no car than one car. Your car was worth a lot more when you first thought about selling it than when you finally decide to do so three years later. A lot of the things that you thought you needed a car for can be handled many other ways when you don't have a car. Carshare is wonderful. You sleep better when you're not worried about what to do with your car.