1975 Mercedes-Benz 450 SEL 6.9


1975 Mercedes-Benz 450 SEL 6.9

1975 Mercedes-Benz 450 SEL 6.9

In May 1975 Mercedes presented the 450 SEL 6.9 – the new top model in the series and true successor to the 300 SEL 6.3. The powerful 6.9-liter V8 engine, developed from the highly successful 6.3-liter unit, achieved an output of 286 hp (210 kW) and maximum torque of 56 mkg. The hydropneumatic suspension with self-leveling – featured for the first time in a Mercedes-Benz passenger car – guaranteed the utmost in ride comfort. Other special equipment included in the standard specification for the top-of-the-range model were the central locking system, air-conditioning and a headlamp wash/wipe system. As was the case with its direct predecessor, the 450 SEL 6.9 proved an immediate success; although it was more than twice as expensive as the 350 SE, a total of 7,380 units were built during its four and a half year production period.

In Detail

submitted by Richard Owen
price $ $ $38 230 USD
engine V8 w/Dry Sump Lubrication
valvetrain SOHC 2 Valves per Cylinder
fuel feed Bosch Fuel Injection
displacement 6834 cc / 417.0 in³
bore 107 mm / 4.21 in
stroke 95 mm / 3.74 in
compression 8.0:1
power 213.3 kw / 286 bhp @ 4250 rpm
specific output 36.58 bhp per litre
bhp/weight 129.2 bhp per tonne
redline 5000
wheel type Aluminum Alloy
front tires Michelin XWX, 215/70 VR-14
rear tires Michelin XWX, 215/70 VR-14
front brakes Vented Discs
f brake size x 277 mm / x 10.9 in
rear brakes Solid Discs
r brake size x 279 mm / x 11.0 in
front wheels F 35.6 x 16.5 cm / 14 x 6.5 in
rear wheels R 35.6 x 16.5 cm / 14 x 6.5 in
f suspension Hydropneumatic Stuts w/Control Arms, Anti-Sway Bar
r suspension Semi Trailing Arm w/Hydropneumatic Stuts w/Control Arms, Anti-Sway Bar
curb weight 1973 kg / 4350 lbs
wheelbase 2960 mm / 116.5 in
front track 1521 mm / 59.9 in
rear track 1506 mm / 59.3 in
length 5334 mm / 210 in
width 1869 mm / 73.6 in
height 1410 mm / 55.5 in
transmission 3-Speed Auto
gear ratios 2.31:1, 1.46:1, 1.00:1, :1
top speed ~225 kph / 139.8 mph
0 – 60 mph ~7.2 seconds
0 – 100 mph ~20.9 seconds
0 – 1/4 mile ~16.0 seconds