Specs for all Opel Astra H GTC versions

Opel Astra OPC: pricing and specifications - Drive

Opel Astra GTC Enhanced With New Diesel Unit

Opel Astra GTC: a bet each way - Drive

All OPEL Astra OPC Models by Year (2000-Present) - Specs, Pictures & History - autoevolution

Specs for all Opel Astra TwinTop versions

2007 Opel Astra

2007 Opel Astra

OPEL Astra GTC Specs & Photos - 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 - autoevolution

OPEL Astra 3 Doors (GTC) Specs & Photos - 2005, 2006, 2007, 2008, 2009 - autoevolution

Opel Astra GTC Turbo (H) '2005–06