S-Class limousines of the series 126
Mercedes-Benz type 300 SD turbodiesel
Type 300 SD turbodiesel 
Name 300 SD turbodiesel 
Name Mercedes-Benz type 300 SD turbodiesel 
Short name 300 SD turbodiesel 
Model W 126 D 30 A 
Production 09.79/10.80 - 08.85 
Number produced 78.725 
Comments concerning the production period begin of production - pre-production batch / main production - end of production 
Prices not available in Germany 
Wheelbase 2935 mm 
Track rear/front 1545/1517 mm 
Length 5145 mm 
Width 1820 mm 
Height 1430 mm; since 10.84: 1436 mm 
Smallest turning circle 11,9 m 
Chassis weight
Max. total weight depending on model 2155 - 2170 kg 
Max. front axle weight depending on model: 1050 - 1070 kg 
Max. rear axle weight depending on model:1095 - 1115 kg 
Max. load depending on model: 450 - 465 kg 
Max. trailer weight braked  
Max. trailer weight unbraked  
Weight empty depending on model: 1695 - 1705 kg 
According to guideline DIN 70020 (with fuel, spare wheel and tool equipment) 
Operating method four-stroke Diesel (with indirect injection and exhaust TC) 
Configuration front, parallel; upright 
Type OM 617 D 30 A / 617.951 
No. of cylinder/configuration 5 / in line 
Bore x stroke 90,9 x 92,4 mm 
Total displacement 2998 ccm 
Compression ratio 21,5 
Crankshaft bearing
Output 121 hp / 89 kW at 4350 /min; ~b 10.82: 125 hp / 92 kW at 4350 /min 
Maximum torque 230 Nm at 2400 /min; since 10.82: 250 Nm at 2400 /min 
No. of valves/configuration 1 intake, 1 exhaust / overhead 
Valve operation top camshaft 
Camshaft drive duplex roller-type chain 
Mixture formation indirect injection, mechanically controlled;~Bosch 5-plunger-type injection pump / exhaust-gas TC 
Cooling water cooling / pump; 12 l water 
Lubrication pressure circulation lubrication / 8,6 l oil 
Electric system 12 V 
Battery 90 Ah; since 08.83: 92 Ah / in the engine compartment 
Dynamo three-phase AC / 770 W; since 02.84: 910 W 
Starter motor electrical / 2,3 kW 
Ignition compression ignition engine 
Fuel tank above the rear axle / 77 l 
Fuel supply piston pump at the injection pump 
Driven whells rear wheels 
Power transmission divided cardan shaft 
Frame desing self-supporting all-steel body 
Wheel suspension front double wishbone-front axle with torsion bar type stabilizer 
Wheel suspension rear diagonal-swing axle, on demand with hydropneumatic level control 
Suspension front coil springs, suppl. rubber suspension, torsion bar stabilizer 
Suspension rear coil springs, suppl. rubber suspension, torsion bar stabilizer 
Damper hydraulic telescopic damper 
Steering ball-and-nut power steering 
Steering transm ratio 14,35:1 / 2,75 steering wheel turns; since 10.81: 15,06:1 / 2,89 
Breaking system braking system 
Breaking system hydraulic dual-circuit braking system with vacuum-operated brake servo unit, on demand with antilock device; disc brakes front (intern. ventilated) and rear 
Parking breake parking brake 
Parking breake mechanical (foot-operated), effective on rear wheels 
Diamatre brake discs front / rear: 278 / 279 mm 
Wheels sheet steel-disc wheels, on demand light-alloy disc wheels 
Wheels rims 6 J 14 x H 2 
Tyres 195/70 HR 14 90 H 

Skrzynie biegów tego modelu (gearbox and performance):

S-Class limousines of the series 126
Mercedes-Benz type 300 SD turbodiesel
Gearbox 4-speed autom. gear shift 
Availability Series 
Shifting Switch lever in car center 
Clutch hydr. torque converter in autom. gear 
Type of gearbox Planet gear 
Synchromesh gears  
Gear transmission I. 3,68; II. 2,41; III. 1,44; IV. 1,0; R. 5,14 
Differential ratio 3,07; from 10.84: 2,88 
Maximum speed 175 km/h 
Accelerations 15,2 s 
Comments Acceleration with shifting through from 0 - 100 km/h; loaded with 2 persons 
Fuel consumption  
acc. to guideline