Coup‚s of the series 140
Mercedes-Benz type S 420 Coup‚
Type S 420 Coup‚ 
Name S 420 Coup‚ 
Name Mercedes-Benz type S 420 Coup‚ 
Short name S 420 Coup‚ 
Model C 140 E 42 
Production 02.94 - 05.96 
Number produced not documented separately 
Comments concerning the production period  
Prices 03.94: 148.120,00 DM 08.94: 151.225,00 DM 05.95: 155.365,00 DM 
Wheelbase 2945 mm 
Track rear/front 1614/1587 mm 
Length 5065 mm 
Width 1912 mm 
Height 1452 mm 
Smallest turning circle 11,66 m 
Chassis weight
Max. total weight 2600 kg 
Max. front axle weight 1240 kg 
Max. rear axle weight 1360 kg 
Max. load 520 kg 
Max. trailer weight braked 2100 kg 
Max. trailer weight unbraked 750 kg 
Weight empty 2080 kg 
According to guideline DIN 70020 (with fuel, spare wheel and tool equipment) 
Operating method four-stroke Otto (w/ manifold-injection and emission control device w/ three-way catalyst) 
Configuration front, parallel; upright 
Type M 119 E 42 / 119.971 
No. of cylinder/configuration 8 / 90ř-V-form; light-alloy block 
Bore x stroke 92,0 x 78,9 mm 
Total displacement 4196 ccm 
Compression ratio 11,0 
Crankshaft bearing 5 
Output 205 kW / 279 hp at 5700 /min 
Maximum torque 400 Nm at 3900 /min 
No. of valves/configuration 2 intake, 2 exhaust / V-shaped overhead 
Valve operation 2 top camshafts per cylinder line (intake camshafts adjustable) 
Camshaft drive duplex roller-type chain 
Mixture formation microprocessor-controlled injection system w/ hot-wire air-mass ~sensor (LH-Jetronic); since 09.95 w/ HFM (engine control Bosch ME) 
Cooling water cooling / pump; 16,5 l water 
Lubrication pressure circulation lubrication / 8,0 l oil 
Electric system 12 V 
Battery 100 Ah / in the boot 
Dynamo three-phase AC / 1680 W 
Starter motor electrical / 1,8 kW 
Ignition ignition mapping control 
Fuel tank above the rear axle / 100 l 
Fuel supply electric supply pump 
Driven whells rear wheels 
Power transmission divided cardan shaft 
Frame desing self-supporting all-steel body 
Wheel suspension front double wishbone 
Wheel suspension rear multilink suspension, on demand with hydropneumatic level control 
Suspension front coil springs, torsion bar stabilizer 
Suspension rear coil springs, torsion bar stabilizer 
Damper gas-pressure damper 
Steering ball-and-nut power steering 
Steering transm ratio 14,02:1 / 2,96 steering wheel turns 
Breaking system braking system 
Breaking system hydraulic dual-circuit braking system with vacuum-operated brake servo unit and antilock device;~internally ventilated disc brakes front and rear 
Parking breake parking brake 
Parking breake mechanical (foot-operated), effective on rear wheels 
Diamatre brake discs front / rear: 320 / 300 mm 
Wheels light-alloy disc wheels 
Wheels rims 8 1/2 J x 18 H 2 
Tyres 255/45 ZR 18 

Skrzynie biegów tego modelu (gearbox and performance):

Coup‚s of the series 140
Mercedes-Benz type S 420 Coup‚
Gearbox 4-speed autom. gear shift 
Availability Series (until 08.95) 
Shifting Switch lever in car center 
Clutch hydr. torque converter in autom. gear 
Type of gearbox Planet gear 
Synchromesh gears  
Gear transmission I. 3,87; II. 2,25; III. 1,44; IV. 1,0; R. 5,59 
Differential ratio 2,82 
Maximum speed 250 km/h 
Accelerations 8,3 s 
Comments Acceleration with shifting through from 0 - 100 km/h; loaded with 2 persons 
Fuel consumption 9,6/11,5/16,5 l 
acc. to guideline 80/1268/EWG; values for 90 km/h / 120 km/h / city cycle 
Coup‚s of the series 140
Mercedes-Benz type S 420 Coup‚
Gearbox 5-speed autom. gear shift with electron. control 
Availability Series (from 09.95) 
Shifting Switch lever in car center 
Clutch hydr. torque converter with slip control clutch 
Type of gearbox Planet gear 
Synchromesh gears  
Gear transmission I. 3,59; II. 2,19; III. 1,41; IV. 1,0; V. 0,83; R. 3,16 
Differential ratio 2,82 
Maximum speed 250 km/h 
Accelerations 8,5 s 
Comments Acceleration with shifting through from 0 - 100 km/h; loaded with 2 persons 
Fuel consumption 8,4/10,0/16,2 l 
acc. to guideline 80/1268/EWG; values for 90 km/h / 120 km/h / city cycle