All things being equal which is most likely to be a reliable vehicle, a 2007 Buick Lucerne with the 3800 engine or a 2006 VW Jetta with the inline five cylinder? Both cars have similar mileage. The VW has a six speed Tiptronic transmisssion, the Buick has a four speed auto. I’m helping a relative buy a car and I’m not sure either would be the best option but they are in his price range and he likes them.