File:Opel Astra J GTC Front-view.JPG - Wikimedia Commons
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Opel Astra Astra GTC H • 2.0 i 16V Turbo (170 Hp) specificații tehnice și consum de combustibil — AutoData24.com
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File:Opel Astra H GTC front.JPG - Wikimedia Commons
Opel Astra - Wikipedia
File:Opel Astra H GTC (Facelift, seit 2007) rear MJ.JPG - Wikimedia Commons
Opel Astra - Wikipedia
File:Opel Astra GTC 1.6 Turbo Innovation (J) – Frontansicht, 17. September 2012, Düsseldorf.jpg - Wikimedia Commons
Chevrolet Astra | Autopedia | Fandom
File:Opel GTC Genève Concept - 1.jpg - Wikipedia
