500 SEC
  • Design name
    C 126 E 50
  • Type
    126.044
  • Production period
    09.1985 - 09.1991
  • Note on production period
    production standard production - end of production
  • Combustion principle
    four-stroke petrol (with manifold injection; emission control system with closed-loop 3-way catalyst as an option, from 09.1986 as standard)
  • Configuration
    front, longitudinal; vertical
  • Engine type
    M 117 E 50 / 117.965
  • Number of cylinders / arrangement
    8 / 90° V; light-alloy block
  • Bore x Stroke
    96.5 x 85.0 mm
  • Total displacement
    4973 cc (tax classification: 4939 cc)
  • Compression ratio
    9.0; from 09.1987: 10.0
  • Rated output
    245 hp / 180 kW at 4750 rpm (with catalyst 223 hp / 164 kW at 4700 rpm); from 09.1987: 265 hp / 195 kW (with catalyst 252 hp / 185 kW) at 5200 rpm
  • Rated torque
    400 Nm at 3750 rpm (with catalyst 365 Nm at 2500 rpm); from~09.1987: 405 Nm at 4000 rpm (with catalyst 390 Nm at 3750 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 / 90 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), hydropneumatic level control optional
  • Front springs
    coil springs, supplementary rubber suspension, torsion bar stabiliser
  • Rear springs
    coil springs, supplementary rubber suspension, torsion bar stabiliser
  • Shock absorber front/rear
    gas-pressure 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
    sheet-steel wheels (light-alloy wheels optional)
  • 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 (until 09.1988)
  • Shifting
    central floor gear shift lever
  • Clutch
    dry single-disc clutch
  • 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
    2.24
  • Maximum speed
    230 km/h (with catalyst 220 km/h);~from 09.1987: 235 km/h (with catalyst 230 km/h)
  • Acceleration 0-100 km/h
    7.3 s (with catalyst 8.0 s); from 09.87: 7.2 s (with catalyst 7.5 s)
  • Comments
    acceleration by shifting through from 0 - 100 km/h (2 occupants)
  • Fuel consumption
    9.1 / 11.4 / 15.4 l (with catalyst 9.6 / 12.0 / 15.9 l);~from 09.1987: 8.8 / 11.1 / 15.8 l (with catalyst 9.4 / 11.7 / 16.2 l)
  • by Guideline
    80/1268/EEC: figures apply to 90 km/h / 120 km/h / urban cycle
  • Gearing
    4-speed automatic transmission
  • Availibility
    as standard (from 09.1988)
  • Shifting
    central floor gear shift lever
  • Clutch
    dry single-disc clutch
  • Transmission type
    planetary gear system
  • Gear ratios
    I. 3.87; II. 2.25; III. 1.44; IV. 1.0; R. 5.59
  • Final drive ratio
    2.24
  • Maximum speed
    235 km/h (with catalyst 230 km/h)
  • Acceleration 0-100 km/h
    7.2 s (with catalyst 7.5 s)
  • Comments
    acceleration by shifting through from 0 - 100 km/h (2 occupants)
  • Fuel consumption
    8.8 / 11.1 / 15.8 l (with catalyst 9.4 / 11.7 / 16.2 l)
  • by Guideline
    80/1268/EEC: figures apply to 90 km/h / 120 km/h / urban cycle
  • Wheelbase
    2845 mm
  • Front / rear track
    1555 / 1527 mm
  • Length
    4935 mm
  • Width
    1828 mm
  • Height
    1407 mm
  • Kerb weight
    1620 kg; from 09.1987: 1650 kg
  • by Guideline
    DIN 70020 (ready to drive, including fuel, spare wheel and tool kit)
  • Gross weight
    2140 kg; from 09.1987: 2170 kg
  • Units produced
    a total of 30,184 (from 07.1980)
  • Prices
    09.1985: DM 100,377.00 12.1985: DM 102,201.00 09.1986: DM 104,595.00 06.1987: DM 107,559.00 02.1988: DM 110,181.00 09.1988: DM 110,865.00 02.1989: DM 113,202.00 01.1990: DM 116,508.00 10.1990: DM 120,384.00 03.1991: DM 123,975.00
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