300 D long wheelbase
- Combustion principle: four-stroke Diesel (with indirect injection)
- Configuration: front, longitudinal; vertical
- Engine type: OM 617 D 30 / 617.912
- Number of cylinders / arrangement: 5 / in line
- Bore x Stroke: 91.0 x 92.4 mm; from 08.1978: 90.9 x 92.4 mm
- Total displacement: 3005 cc (tax 2971 cc); from 08.1978: 2998 cc (tax 2938 cc)
- Compression ratio: 21,5
- Rated output: 80 hp / 59 kW at 4000 rpm;~from 09.1979: 88 hp / 65 kW at 4400 rpm
- Rated torque: 172 Nm at 2400 rpm
- Number of valves / arrangement: 1 intake, 1 exhaust / overhead
- Valve operation: 1 overhead camshaft
- Camshaft drive: double roller chain
- Fuel system: indirect injection, mechanically controlled;~Bosch 5-plunger injection pump
- Fuel tank: position / capacity: above the rear axle / 65 l
- Frame design: steel unit body
- Front-wheel suspension: double wishbone
- Rear-wheel suspension: semi-trailing arm axle (hydropneumatic level control optional)
- Front springs: coil springs, supplementary rubber suspension, torsion bar stabiliser
- Rear springs: coil springs, hydropneumatic spring struts, 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, antilock system optional from 08.1980; four-wheel disc brakes
- Parking brake (hand brake): mechanical (foot-operated), acting on rear wheels
- Wheels: sheet-steel disc wheels
- Wheel rims: 5 1/2 J x 15 H 2
- Tires: 185 HR 15 93 H
- Driven wheels: rear wheels
- Drivetrain: divided cardan shaft
- Gearing: 4-speed manual transmission
- Availibility: as standard
- Shifting: central floor gear shift lever
- Clutch: dry single-disc clutch
- Transmission type: change-speed gear
- Gear ratios: I. 3.90; II. 2.30; III. 1.41; IV. 1.0; R. 3.66
- Final drive ratio: 3.69
- Maximum speed: 148 km/h; from 09.1979: 155 km/h
- Acceleration 0-100 km/h: 19.9 s; from 09.79: 17.8 s
- Fuel consumption: 8.7 / 12.4 / 11.5 l; from 10.1981: 7.8 / 10.4 / 9.9 l
- by Guideline: 80/1268/EEC: figures apply to 90 km/h / 120 km/h / urban cycle
- Gearing: 5-speed manual transmission
- Availibility: optional (from 02.1982)
- Shifting: central floor gear shift lever
- Clutch: dry single-disc clutch
- Transmission type: change-speed gear
- Gear ratios: I. 3.82; II. 2.20; III. 1.40; IV. 1.0; V. 0.81; R. 3.71
- Final drive ratio: 3.69
- Maximum speed: 155 km/h
- Acceleration 0-100 km/h: 17.8 s
- Gearing: 4-speed automatic transmission
- Availibility: optional (until 06.1983)
- Shifting: central floor gear shift lever
- Clutch: hydraulic torque converter in automatic transmission
- Transmission type: planetary gear system
- Gear ratios: I. 3.98; II. 2.39; III. 1.46; IV. 1.0; R. 5.47
- Final drive ratio: 3.69
- Maximum speed: 143 km/h; from 09.1979: 150 km/h
- Acceleration 0-100 km/h: 20.8 s; from 09.79: 19.2 s
- Fuel consumption: 9.0 / 12.6 / 11.5 l; from 10.1981: 8.1 / 11.0 / 10.0 l
- by Guideline: 80/1268/EEC: figures apply to 90 km/h / 120 km/h / urban cycle
- Gearing: 4-speed automatic transmission
- Availibility: optional (from 07.1983)
- Shifting: central floor gear shift lever
- Clutch: hydraulic torque converter in automatic transmission
- Transmission type: planetary gear system
- Gear ratios: I. 4.25; II. 2.41; III. 1.49; IV. 1.0; R. 5.67
- Final drive ratio: 3.69
- Maximum speed: 150 km/h
- Acceleration 0-100 km/h: 19.2 s
- Fuel consumption: 7.9 / 10.7 / 9.9 l
- by Guideline: 80/1268/EEC: figures apply to 90 km/h / 120 km/h / urban cycle
- Wheelbase: 3425 mm
- Front / rear track: 1477 / 1430 mm
- Length: 5355 mm
- Width: 1786 mm
- Height: 1480 mm
- Kerb weight: 1630 kg
- by Guideline: DIN 70020 (ready to drive, including fuel, spare wheel and tool kit)
- Gross weight: 2260 kg
- Units produced: 4679 saloons
- Prices: 09.1977: DM 34,698.60
01.1978: DM 35,011.20
04.1978: DM 36,568.00
12.1978: DM 37,307.20
05.1979: DM 37,503.20
01.07.1979: DM 37,838.05
16.07.1979: DM 38,566.90
09.1979: DM 38,905.90
03.1980: DM 40,431.40
08.1980: DM 41,188.50
07.1981: DM 42,623.60
01.1982: DM 43,787.50
07.1982: DM 45.301,70
07.1983: DM 45,702.60
08.1983: DM 47,139.00
01.1984: DM 48,222.00
09.1984: DM 49,647.00
04.1985: DM 51,072.00