6.9.

Once you get your mind out of the bloody gutter, you come to realize how special this unknown car is. This is the largest production engine, displacement wise, to be placed in a Mercedes-Benz production vehicle.

The 300SEL 6.3's replacement, this vehicle offered more advanced technology, a larger engine, but was half a second slower than the 6.3. The 6.9 is a member of the prestigious M-100 family of super saloons.

6.9L (417 cu. in.) V8 SOHC, Bosch K-Jetronic Fuel Injection
Dry Sump Lubrication
Hydraulic valve clearance compensation

286 hp and 405 ft/lb. torque available at the rear wheels.

At a time when oil was in short supply, these are remarkable numbers. More accurate hp estimates place this engine at well over 300 hp since Mercedes-Benz tends to "accidently" neglect to report several dozen hp to the media and insurance companies.

All modern ammenities including a hydro-pneumatic suspension.

Rolls-Royce had nothing on these vehicles except in the interior department - Rolls-Royce's only advantage. Still a beautiful interior considering auto maker's "attempts" at interiors today.

Politely notifying you that this is no ordinary 450SEL.

Advantages of a long wheelbase vehicle.