Since getting my 1st car, a 1968 Volvo 122S wagon, I have been a long time wagon fan and have owned over 10 wagons or hatchbacks over the last 40 years. I thought I should check out the new 2018 Buick Regal TourX is new on the block. I currently drive a 2015 Subaru Outback Limited with a larger aftermarket rear sway bar and upgraded tires. I drove a TourX for about 15 minutes on freeway and city streets. IMO it is a very nice car! Here are my impressions compared to my 2015 Outback Limited 2.5i with 20 mm RSB Exterior: TourX looks larger on outside than dimensions suggest, it is a BIG Wagon! Given its length, low ground clearance and somewhat low roof ling it is pretty handsome rig overall. But personally I don't care for all the chrome trim around foglights, tailpipes.... Despite it's size it drives relatively small.
I feel that the OB interior (2015) is nicer by small margin, I didn't care for TourX chrome / piano black treatment and suspect sunlight reflection/glare could be an issue plus I thinik it will be a magnify dust and fingerprints thus making it fussy to keep looking nice. Back seat is spacious and comfortable in both, back footwell space is huge in Buick. Cargo area: TourX it has significantly longer cargo area - about 10-12" longer - looks huge with seats down, seats fold flat. Width is similar, but OB height is about 6" taller in center. TourX will accomodate long items better than OB, but OB will swallow tall items better.
Disclosure: I have never driven the OB H6. The TourX's engine & tranny were very responsive, engine is quite strong up to 85 mph and transmission quite seemless. OB's CVT is also very smooth & seemless except when you floor it.
Given the lower center of gravity, the TourX corners flatter and is more responsive than the Outback. Even though car is bigger, it drives small than OB whhich seems somewhat ponderous in comparison.
TourX ride is noticably smoother than the OB Tire noise is about the same but TourX has less wind noise.Seats have better bolstering then OB and fit me better. OB seats are very comfortable, perhaps better for a large person, but also somewhat flat.