420 SL
  • Design name
    R 107 E 42
  • Type
    107.047
  • Production period
    07.1985 / 11.1985 - 08.1989
  • Note on production period
    production start-up pre-production series / standard production - end of production
  • Combustion principle
    four-stroke petrol (with manifold injection; emission control system with closed-loop 3-way catalyst as standard from 09.1986)
  • Configuration
    front, longitudinal; vertical
  • Engine type
    M 116 E 42 / 116.964
  • Number of cylinders / arrangement
    8 / 90° V; light-alloy block
  • Bore x Stroke
    92.0 x 78.9 mm
  • Total displacement
    4196 cc (tax classification: 4146 cc)
  • Compression ratio
    9.0
  • Rated output
    218 hp / 160 kW (with catalyst 204 hp / 150 kW) at 5200 rpm
  • Rated torque
    33.0 mkg at 3750 rpm (with catalyst 31.0 mkg at 3600 rpm)
  • Number of valves / arrangement
    1 intake, 1 exhaust / overhead
  • Valve operation
    1 overhead camshaft per cylinder bank
  • Camshaft drive
    double roller chain
  • Fuel system
    manifold injection, mechanically-electronically controlled~(Bosch KE-Jetronic)
  • Fuel tank: position / capacity
    above the rear axle / 85 l
  • Frame design
    steel unit body
  • Front-wheel suspension
    double wishbone
  • Rear-wheel suspension
    twist-beam axle (semi-trailing arm axle with starting- and braking-torque compensation)
  • Front springs
    coil springs, supplementary rubber suspension, torsion bar stabiliser
  • Rear springs
    coil springs, supplementary rubber suspension, torsion bar stabiliser
  • Shock absorber front/rear
    telescopic shock absorbers
  • Steering
    recirculating-ball power steering
  • Brake system (foot brake)
    hydraulic dual-circuit brake system with vacuum booster and antilock system;~disc brakes front (internally ventilated) and rear
  • Parking brake (hand brake)
    mechanical (foot-operated), acting on rear wheels
  • Wheels
    light-alloy wheels
  • Wheel rims
    7 J x 15 H 2
  • Tires
    205/65 VR 15
  • Driven wheels
    rear wheels
  • Drivetrain
    divided cardan shaft
  • Gearing
    4-speed automatic transmission
  • Availibility
    as standard
  • Shifting
    central floor gear shift lever
  • Clutch
    hydraulic torque converter in automatic transmission
  • Transmission type
    planetary gear system
  • Gear ratios
    I. 3.68; II. 2.41; III. 1.44; IV. 1.0; R. 5.14
  • Final drive ratio
    2.47
  • Maximum speed
    213 km/h; with catalyst: 205 km/h
  • Acceleration 0-100 km/h
    8.5 s; with catalyst: 9.0 s
  • Fuel consumption
    9.4 / 11.4 / 14.9 l; with catalyst: 9.9 / 12.1 / 15.4 l
  • by Guideline
    80/1268/EEC: figures apply to 90 km/h / 120 km/h / urban cycle
  • Wheelbase
    2455 mm
  • Front / rear track
    1465 / 1466 mm
  • Length
    4390 mm
  • Width
    1790 mm
  • Height
    1307 mm (with cabriolet top closed)
  • Kerb weight
    1600 kg (with hardtop 1640 kg)
  • by Guideline
    DIN 70020 (ready to drive, including fuel, spare wheel and tool kit)
  • Gross weight
    2020 kg
  • Units produced
    2148
  • Prices
    09.1985: DM 80,826.00
    12.1985: DM 82,308.00
    09.1986: DM 84,702.00
    06.1987: DM 87,153.00
    02.1988: DM 89,262.00
    09.1988: DM 89,604.00
    02.1989: DM 91,827.00
    (prices including hardtop and roadster soft top)
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