I thought I would buy a Model S this year. Although it is still the top pick on the list of cars I'd like to buy, some of facts really prevent me from doing so. I might as well continue with my 18-year old Lexus which is still running strong.
1. 12V battery issue. It is not what I said, but a ranger said so, refer to http://www.teslamotorsclub.com/showthread.php/41006-Near-annual-replacem...
If people would still argue "it is expected..." "my car's battery died...." blah blah. i can't agree with you, sorry. The battery in my Lexus was changed at the beginning of 2011 and still running very strong, it starts up the car in -20C (-4F) no problem. My former Accord's 12V battery served me 8 years before I sold the car. The idea of changing a battery every 16 month is really a design flaw to me. I have seen numerous Audi A6, Benz S class and BMW 5 Series with batteries lasted years. You can single out failures for these cars, but those cases are simply not expectations whereas it is for a Model S. i would probably live up with a 5 year interval given the cost to swap it out is reasonable.
2. Building quality, Model S built in late 2014 still undergo some small problems as well as major ones. On an average, Model S build quality is still lower than most of the cars in the same class.
3. Longer range. That could be a debatable point, but most of the owners I met in Canada and US do want longer range. A practical projection would be a 40% bump on the battery capacity, it would make a long trip more enjoyable. Imagine driving with highway speed of 120KM/H for 4 hours straight and I would think most people can do a 4-hour trip without stopping. Getting rid of fancy things, and use the cost saving to bump up the battery capacity and Model S will enjoy more sales. for me choosing between a S85D + Tech package and S110 is a no brainer. The latter is certainly more appealing to me.