Purnell Adventure launched the thrilling INEOS Grenadier in Sydney in 2023. Durable, capable, reliable and built to go the distance, the INEOS Grenadier is a serious off-roader, built with purpose. FAQ'S. What is the INEOS Grenadier? The INEOS Grenadier is a rugged, off-road 4x4 designed for adventure. Built with a focus on durability and performance,