My brother had a rental 2006 Uplander yesterday. The company he works for gave him one because he needed to drive a bunch of employees to a jobsite. This particular van had only 9800 km on it when he picked it up, and 4 percent left on the OLM. The oil looked pretty filthy, with a reddish sludgy look to it and it was half a quart low. Engine was the base 3.5 V6. Plenty of pick up around town and on highway with just 2 people and a tank of fuel, but I imagine it would get slow with a full load of people and luggage. The engine gets a little loud towards the upper RPM ranges, but with normal driving it's quite silent. My brother 'tried' out the rev limiter in neutral and it's quite different than when I'm used to. Put the tranny in neutral, stomp the pedal and the tach swings to 6000 and just sits there revving away. No abrupt on-off type of fuel interruption to stop the engine from revving higher. The onboard computer read highway fuel mileage at about 24 mpg at 60 mph, dropping to 20 or abouts at 70 mpg. I'm unsure whether that's using the US or Imperial gallon. Ride is fairly smooth and quiet, but still has the wallowly feeling going around corners or through dips in the road. The voice activated OnStar system is a nice touch but it can get tedious to use. We never actually used any of the functions that would have cost money, but just played around with the voice commands. You have to speak clearly and slowly and be looking towards the controls to get the best response out of the unit. I can't imagine how hard it would be to use the voice feature with a vanload of screaming kids or loud adults. The standard MP3 cd player worked well but the factory speakers can't handle a lot of music with heavy bass. They distort quite easily if you turn the volume up high.