What car to do 50k miles a year in?

[Singh]

This could be a dillema I am faced with soon. Although I would look to move nearer to my workplace, this is a possible alternative.

These are the options

1. Buy a brand new car, an Audi isn't as appealing due to their 60k mileage cap on their warranties. A BMW is a possibility, great engines and cars with an unlimited mileage warranty, but I don't want to be trapped 100 miles from home when the bad weather comes down, snow tyres?
2. Buy a D3 TDI A8, replace it every year, so not too be lumbered with a too high a mileage car that will be hard to shift in the future, and possibly less reliable.
3. Buy a B5 RS4 weekend toy and get the train

What would you buy if you HAD to drive?

- Fuel economy
- Reliability
- Comfort
- Fairly decent poke

Would you buy old/new or lease? Let me know your thoughts.