Correct, my expectations are that I should have no niggles in 24 months/35000 miles of motoring (the term of my company car lease) - for a modern car I think that's perfectly reasonable, particularly given the amount of R&D and associated testing that takes place. As I say, the 1er did it without breaking a sweat.
For a modern car I do think that's less than reasonable - there are far more things to potentially go wrong in a modern car than say an 80's MK2 Golf where you had to worry about the trim, a much simpler engine (without swirl flaps, egr valves, catalysts/DPFs, massively high injection pressures, dual mass flywheels, ECUs etc), the wheels and the gearbox. The simplest eletronic glitch these days can leave a car on the roadside. The electronic systems in a modern car have to undergo the kind of punishment you would not subject a laptop/ipod/TV to - vibration, extremes of temperature in service, humidity etc.
Your 1er did alright for you - but plenty of others with the same car will not have been so lucky. A half day visit to the dealership to fix a simple warranty issue is no ruination of a 2 year relationship with the car.
I do think that you're leaving yourself open for a huge disappointment on whatever car you get in the future if you consider even one warranty job in your ownership a fail on the manuufacturer's part.
R&D, road testing and other considerations only go so far to provide a good level of confidence of reliability - statistics come into play with 3-sigma standards etc, especially with failure rates of components that VW/BMW manufacture, and that third party manufacturers are contracted to supply.
If you want rock solid reliability, neither VW nor BMW fit the bill, they are both decidedly mid-table, with VW (20th/20th) beating BMW (25th/26th) in 2012/2013's what car reliability survey
http://www.whatcar.com/car-news/introduction/1206676.
http://www.whatcar.com/car-news/honda-tops-reliability-survey/1202107You'll be buying a Honda Civic or Toyota Auris after one "bad" example of either a 1er or a Golf, and even they're not infallible.