It is a lean-burn aluminum DOHC 4-valve design with variable valve timing and optional NEO Di direct injection.

The QG engines were designed by Nissan's Aichi Kikai division [1] in Japan.

The cylinder head also features Nissan Variable Cam Timing (N-VCT) and micro-polished camshafts.

It is used in the following vehicles: The 1.8 L (1,769 cc) QG18DE was designed for Nissan by Aichi Machine Industry, Japan.

It has a cast-iron engine block, aluminum DOHC cylinder head, uses Multi-port fuel injection, forged-steel connecting rods, two single-piece cast camshafts and a cast-aluminum intake manifold.