Vauxhall CNG straight-4 1.6 L A 16 XNT engines

Vauxhall CNG straight-4 1.6 L A 16 XNT 148 HP at 5000 RPM, 210 N⋅m at 2300 RPM engine

It's an 1598 cc (1.41 UK qt.) internal combustion reciprocating Inline 4 engine. It has bore/stroke ratio of 79 mm × 81.5 mm (3.11 in × 3.21 in). This engine was rated 110 kW (147.51 hp) at 5000 rpm and 210 N⋅m (154.89 lbf⋅ft) of torque at 2300 rpm.