For example, a reciprocating engine achieves maximum efficiency when the intake air is unthrottled and the engine is running near its torque peak.

The fuel-injected 1390cc Energy engine produces 80bhp (57.5kW) at 5,750rpm with a torque peak of 80 lb ft (107Nm) at 3,500rpm.

The fuel-injected 1794cc engine produces 95bhp (68.5kW) at 5,750rpm with a torque peak of 107 lb ft (142Nm) at 3,500rpm.

The 1870cc diesel engine produces 65bhp (47kW) at 4,500rpm with a torque peak of 87 lb ft (118 Nm) at 2,750rpm.

The 1764cc 16V engine produces 137bhp (99kW) at 6,500rpm with a torque peak of 119 lb ft (158Nm) at 4,250rpm.

Maximum power is developed at a rather elevated 6400rpm and a steady 70mph sees the engine spinning at 4000rpm, right on the torque peak.

Differences from the LLT include a slightly lower compression ratio, 11.3:1, and lower power and torque peaks.

Output is quoted as 170bhp at 10,000rpm with a healthy torque peak of 95lb ft of torque at 8,750rpm.

If tuned properly, the clutch will tend to keep the speed at or near the torque peak of the engine.

Pull away with three adults on board and the Golf is brisk and strong up to about 50mph, where the torque peak starts to tail off.