Types 300 - 300 d (W 186, W 189)
Mercedes-Benz type 300 d Cabriolet D
Type 300 d Cabriolet D 
Name 300 d Cabriolet D 
Name Mercedes-Benz type 300 d Cabriolet D 
Short name 300 d Cabriolet D 
Model W 189 
Production 07.58 - 02.62 
Number produced 65 
Comments concerning the production period  
Prices 37.000,00 DM (with automatic transmission) and 35.500,00 DM (with manual transmission) 
Wheelbase 3150 mm 
Track rear/front 1480/1525 mm 
Length 5190 mm 
Width 1860 mm 
Height 1620 mm 
Smallest turning circle 12,8 m 
Chassis weight
Max. total weight 2480 kg 
Max. front axle weight 1180 kg 
Max. rear axle weight 1300 kg 
Max. load 450 kg, with automatic 400 kg 
Max. trailer weight braked 1200 kg 
Max. trailer weight unbraked 750 kg 
Weight empty 2030 kg, with automatic 2080 kg 
According to guideline DIN 70020 (with fuel, spare wheel and tool equipment) 
Operating method four-stroke Otto (with intermitting manifold-injection) 
Configuration front, parallel; upright 
Type M 189 I / 189.981, with automatic 189.980 
No. of cylinder/configuration 6 / in line 
Bore x stroke 85 x 88 mm 
Total displacement 2996 ccm (tax classification: 2975 ccm) 
Compression ratio 8,55 
Crankshaft bearing 7 
Output 160 hp at 5300 /min 
Maximum torque 24,2 mkg at 4200 /min 
No. of valves/configuration 1 intake, 1 exhaust / overhead 
Valve operation top camshaft 
Camshaft drive duplex roller-type chain 
Mixture formation intermittent manifold-injection, mechanically controlled;~Bosch 6-plunger-type injection pump 
Cooling water cooling / pump; 21 l water 
Lubrication pressure circulation lubrication / 6,5 l oil 
Electric system 12 V 
Battery 70 Ah / in the engine compartment 
Dynamo 300 W 
Starter motor electrical / 1,0 PS 
Ignition battery ignition 
Fuel tank in the rear / 72 l; since 07.58: 78 l 
Fuel supply piston pump at the injection pump 
Driven whells rear wheels 
Power transmission divided cardan shaft 
Frame desing X-shaped oval tube frame with centre reinforcement / all-steel body 
Wheel suspension front double wishbone 
Wheel suspension rear single-joint swing axle 
Suspension front coil springs, torsion bar stabilizer 
Suspension rear double coil springs, electrically engageable torsion-bar suspension 
Damper hydraulic telescopic damper 
Steering recirculating-ball steerg. 
Steering transm ratio 24,0:1 / 3,75 steering wheel turns 
Breaking system braking system 
Breaking system hydraulic, with vacuum-operated brake servo unit, effective on front- and rear wheels ; drum brakes front and rear 
Parking breake parking brake 
Parking breake mechanical, effective on rear wheels 
Diamatre brake drums front / rear: 260 mm 
Wheels sheet steel-disc wheels 
Wheels rims drop centre rim 5,50 K x 15 
Tyres 7,60 S 15 (6 PR) 

Skrzynie biegów tego modelu (gearbox and performance):

Types 300 - 300 d (W 186, W 189)
Mercedes-Benz type 300 d Cabriolet D
Gearbox 4-speed gear shift 
Availability by request 
Shifting Gear shift 
Clutch Single-plate dry clutch 
Type of gearbox Pinion change gear 
Synchromesh gears I - IV 
Gear transmission I. 3,44; II. 2,30; III. 1,53; IV. 1,0; R. 3,08 
Differential ratio 4,67 
Maximum speed 170 km/h 
Accelerations 17 s 
Comments Acceleration with shifting through from 0 - 100 km/h; loaded with 2 persons 
Fuel consumption 15,8 l 
acc. to guideline DIN 70030, ascertained at 3/4 of max. speed, maximal 110 km/h, unter Zuschlag von 10 % 
Types 300 - 300 d (W 186, W 189)
Mercedes-Benz type 300 d Cabriolet D
Gearbox 3-speed autom. gear shift 
Availability Series 
Shifting Switch lever at steering wheel 
Clutch hydr. torque converter in the aut. gear 
Type of gearbox Planet gear 
Synchromesh gears  
Gear transmission I. 2,303; II. 1,435; III. 1,0; R. 2,01 
Differential ratio 4,67 (for USA 5,125) 
Maximum speed 165 km/h; at rear axle transm. 5,125: 160 km/h 
Accelerations 18 s 
Comments Acceleration with shifting through from 0 - 100 km/h; loaded with 2 persons 
Fuel consumption 15,8 l 
acc. to guideline DIN 70030, ascertained at 3/4 of max. speed, maximal 110 km/h, unter Zuschlag von 10 %