Key facts

1987 Mercedes-Benz 420 SE W 126 W 126 E 42 information summary

What body style?
sedan/saloon with 4/5 seats
How long?
5020 mm
How heavy?
1640 kg
What size engine?
4.2 litre, 4196 cm3
How many cylinders?
8, V
How much power?
231 PS / 228 bhp / 170 kW @ 5400 rpm
How much torque?
335 Nm / 247 ft.lb / 34.2 kgm @ 4000 rpm
How quick?
0-100 km/h: 8.20 s
How fast?
222 km/h, 138 mph
How economical?
8.7/10.7/15.1 l/100km 90 km/h / 120 km/h / urban as per 80/1268/EEC

Mercedes-Benz

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Mercedes-Benz logo

Daimler AG

1987 Mercedes-Benz 420 SE technical specifications

Introduction

This vehicle has a 4 door saloon (sedan) type body designed by Bruno Sacco with a front located engine powering the rear wheels.
The Mercedes-Benz 420 SE belongs to the W 126 model family from Mercedes-Benz.
Power is supplied by a single overhead camshaft, 4.2 litre naturally aspirated 8 cylinder powerplant, with 2 valves per cylinder that develops power and torque figures of 228 bhp (231 PS/170 kW) at 5400 rpm and 335 N·m (247 lb·ft/34.2 kgm) at 4000 rpm respectively.
The power is transmitted to the wheels via a 4 speed automatic gearbox.
It weighs a claimed 1640 kg at the kerb.
Its maximum speed quoted is 222 km/h (138 mph), officially quoted fuel consumption is 8.7/10.7/15.1 l/100km 90 km/h / 120 km/h / urban as per 80/1268/EEC.
1987 Mercedes-Benz 420 SE data
1987 Mercedes-Benz 420 SE W 126 W 126 E 42 data
bodywork
Body type4/5 seater sedan/saloon
Number of doors4
DesignerBruno Sacco
dimensions & weights
mminches
Wheelbase 2935 115.6
Track/tread (front) 1555 61.2
Track/tread (rear) 1527 60.1
Length 5020 197.6
Width 1820 71.7
Height 1437 56.6
Ground clearance
length:wheelbase ratio 1.71
Kerb weight 1640 kg 3616 lb
Weight distribution
fuel tank capacity 90 litres 19.8 UK Gal 23.8 US Gal
aerodynamics
Drag coefficient
Frontal area
CdA
engine
engine type naturally aspirated petrol
Engine manufacturer Mercedes-Benz
Engine code M 116 E 42 / 116.965
Cylinders V 8 in 90° vee
Capacity 4.2 litre
4196 cc
(256.056 cu in)
Bore × Stroke 92 × 78.9 mm
3.62 × 3.11 in
Bore/stroke ratio 1.17
single overhead camshaft (SOHC)
2 valves per cylinder
16 valves in total
maximum power output 231 PS (228 bhp) (170 kW)
at 5400 rpm
Specific output 54.3 bhp/litre
0.89 bhp/cu in
maximum torque 335 Nm (247 ft·lb) (34.2 kgm)
at 4000 rpm
Specific torque 79.84 Nm/litre
0.96 ft·lb/cu3
Engine construction
sump wet sumped
compression ratio 10:1
Fuel system Bosch KE-Jetronic fuel injection
bmep (brake mean effective pressure) 1003.3 kPa (145.5 psi)
Maximum RPM
crankshaft bearings 5
Engine coolant Water
Unitary capacity 524.5 cc
Aspiration Normal
Compressor N/A
Intercooler None
Catalytic converter N
performance
Acceleration 0-80km/h (50mph)
Acceleration 0-60mph
Acceleration 0-100km/h 8.20 s
Acceleration 0-160km/h (100mph)
Standing quarter-mile
Standing kilometre
Maximum speed 222 km/h (138 mph)
Power-to-weight ratio 140.96 PS/g
103.67 kW/g
139.02 bhp/ton
0.06 bhp/lb
Weight-to-power ratio 9.65 kg/kW
16.11 lb/bhp
fuel consumption
Fuel consumption 8.7/10.7/15.1 l/100km 90 km/h / 120 km/h / urban as per 80/1268/EEC
universal consumption (calculated from the above)
litres per 100km8.7/10.7/15.1 l/100km 90kmph/120kmph/urban
km per litre11.5/9.3/6.6 km/l 90kmph/120kmph/urban
UK MPG32.5/26.4/18.7 UK MPG 90kmph/120kmph/urban
US MPG27.0/22.0/15.6 US MPG 90kmph/120kmph/urban
Carbon dioxide emissions
Carfolio Calculated CO2 ? 311.11 g/km
VED band (UK)
CO2 Effizienz (DE)
chassis
Engine position front
Engine layout longitudinal
Drive wheels rear wheel drive  
Torque split N/A
Steering recirculating ball PAS
turns lock-to-lock 3.030
Turning circle
Front suspension I.DW.CS.ARB.
Rear suspension I.STA.CS.ARB.
Wheel size front 7J x 15 H 2
Wheel size rear 7J x 15 H 2
Tyres front 205/65 VR 15
Tyres rear 205/65 VR 15
Brakes F/R VeDi/Di-S-ABS
Front brake diameter 300 mm
Rear brake diameter 279 mm
Gearbox 4 speed automatic
Top gear ratio 1.00
Final drive ratio 2.47
general
Carfolio.com ID7414
Production total
Model code W 126 E 42
Model family W 126
RAC rating 42.0
Insurance classification No information available
Tax band No information available
1987 Mercedes-Benz 420 SE added before December 1995.
Last modified 2013-06-19.

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1987 Mercedes-Benz 420 SE


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