Greatest road tests ever: BMW 633 CSi

Tested 16.10.76

In the wake of the impressive BMW 3.0 CSL coupé, the firm added space, comfort and performance when creating the enduring and since much loved BMW 6 Series.

Drive came from the 3.3Li saloon’s fuel-injected 3210cc straight six, giving identical power and a tad more torque than the 178kg-lighter 3.0 CSL coupé.

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Engine responsiveness was superb, letting you trickle along in top at 30mph but also yielding lusty acceleration without the need to downshift and cruising comfortably at 105mph. Economy bettered the CSL by a full 3.9mpg overall.

The four-speed manual ’box was light yet positive in action, but reverse was tricky to engage and the clutch was heavy.

The worm and roller steering was accurate enough with unobtrusive power assistance. Roll was well contained, understeer could be curbed with the throttle and power slides were easily held. The relatively firm ride jerked a bit in town but dialled in with pace, aside from some rear-end float. All-round ventilated discs were strong but prone to locking up.

The luxuriously finished cabin was very comfortable, even for two rear passengers.

For: Performance, economy, handling and steering

Against: Price, firm ride, rear-end float, fiddly reverse

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