I really enjoyed driving my Jetta TDI. Road trips were excellent, and the ample mid range torque was a true pleasure on the hilly, twisty back roads of TN. While not a performance car in any way, the characteristics of the turbodiesel were ideal for spirited driving and extended high speed trips.
However, the number of difficult and expensive maintenance issues drove me to sell the car at 75K miles. I miss the car, I don't miss the constant costly repairs and being stranded on the side of the road.
I suggest you take a careful look at
www.truedelta.com (the only accurate car reliability data website) (delta=difference in reliability between makes and models) VW regularly comes out on the very low end of the reliability statistics. Some models are an order of magnitude worse (10x) than a comparable Toyota.
I find that on truedelta, selecting reliability by model year, and comparing a Passat to a Camry will be very informative. The older the cars get, the more the Camry shines, where the Passat TDI shows 7 to 10 times more repairs. Drilling down into the types and cost of repairs becomes even more enlightening.
One more suggestion: Please don't let warranty length drive your purchases. The reliability data is far more important than the length of the warranty. Sub standard vehicles are sub standard, regardless of the promises made. And, I certainly don't trust dealerships to repair things properly. I trust manufacturers to use the least expensive repair possible, and every possible reason to deny coverage.
Battery warranty may not cover lack of capacity!