2020 Opel Insignia Leaked as a Buick Regal in China - autoevolution
2018 Buick Regal Wagon previewed by Opel Insignia Sports Tourer - Kelley Blue Book
Exclusive: The Real Reasons Behind GM's Decision Against V6 Turbo, AWD In Buick Regal GS | GM Authority
Buick Regal's Opel twin given an update
New Opel Insignia Grand Sport Dresses Up As A Buick Regal | Carscoops
New Buick Regal GS: GM Rebadges Opel Insignia OPC But Replaces 325HP V6 Biturbo with 255HP 2.0-liter Four-Pot | Carscoops
Opel Insignia breaks cover, and we really hope it's the next-gen Buick Regal
Buick Confirms Opel Insignia-Based Regal For US Market - The Truth About Cars
Regal GS to Insignia OPC Conversion with Pics! | Buick Forums
New Vauxhall Insignia gives us a sneak peek at Buick's replacement for the Regal - CNET
2018 Buick Regal Previewed by Opel Insignia - Kelley Blue Book
This is a Buick Regal which has been thoroughly converted into an Opel Insignia. Know of any other examples of cars with "foreign appearance" conversions? : r/cars
2018 Buick Regal TourX's Euro twin is the Opel Insignia Country Tourer
Exchange Student on the Honor Roll - 2011 Buick Regal - Review - The New York Times
Buick Regal vs. Vauxhall Insignia? | GTPlanet
2015 Buick Regal GS AWD (Opel Insignia) Start Up, Road Test, and In Depth Review - YouTube