The Nissan QR25DE engine began production in 2001. As of 2021 the QR25 2.5L engine still remains in many Nissan models including the Altima and Rogue. Given its 20+ year old design the engine has been through a number of updates to improve performance, emissions, fuel economy, and reliability. However, they all share the same base design and QR25DE engine code. It's a solid … [Read more...] about 4 Common Nissan QR25DE Engine Problems