Coup‚s of the series 123
Mercedes-Benz type 280 C
Type 280 C 
Name 280 C 
Name Mercedes-Benz type 280 C 
Short name 280 C 
Model C 123 V 28 
Production 11.76/04.77 - 03.80 
Number produced 3.704 
Comments concerning the production period begin of production - pre-production batch / main production - end of production 
Prices 03.77: 29.847,90 DM 01.78: 30.116,80 DM 04.78: 31.270,40 DM 12.78: 31.897,60 DM 05.79: 32.093,60 DM 01.07.79: 32.380,15 DM 16.07.79: 33.007,30 DM 
Wheelbase 2710 mm 
Track rear/front 1488/1446 mm 
Length 4640 mm 
Width 1786 mm 
Height 1395 mm 
Smallest turning circle 11,0 m 
Chassis weight
Max. total weight 1965 kg 
Max. front axle weight 960 kg 
Max. rear axle weight 1005 kg 
Max. load 520 kg 
Max. trailer weight braked 1200 kg 
Max. trailer weight unbraked 750 kg 
Weight empty 1445 kg 
According to guideline DIN 70020 (with fuel, spare wheel and tool equipment) 
Operating method four-stroke Otto 
Configuration front, parallel; upright 
Type M 110 V 28 / 110.923 
No. of cylinder/configuration 6 / in line 
Bore x stroke 86,0 x 78,8 mm 
Total displacement 2746 ccm (tax classification: 2717 ccm) 
Compression ratio 8,7:1 
Crankshaft bearing 7 
Output 156 hp / 115 kW at 5500 /min 
Maximum torque 223 Nm at 4000 /min 
No. of valves/configuration 1 intake, 1 exhaust / V-shaped overhead 
Valve operation 2 top camshafts 
Camshaft drive duplex roller-type chain 
Mixture formation 1 double-register-downdraught carburetter Solex 4 A 1 
Cooling water cooling / pump; 10 l water 
Lubrication pressure circulation lubrication / 6 l oil 
Electric system 12 V 
Battery 55 Ah / in the engine compartment 
Dynamo three-phase AC / 770 W 
Starter motor electrical / 1,5 kW 
Ignition battery ignition 
Fuel tank above the rear axle / 80 l 
Fuel supply diaphragm 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 16,55:1 / 3,2 steering wheel turns 
Breaking system braking system 
Breaking system hydraulic dual-circuit braking system with vacuum-operated brake servo unit; disc brakes front 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 x 14 H 2 
Tyres 195/70 HR 14 89 H 

Skrzynie biegów tego modelu (gearbox and performance):

Coup‚s of the series 123
Mercedes-Benz type 280 C
Gearbox 4-speed gear shift 
Availability Series 
Shifting Feed control 
Clutch Single-plate dry clutch 
Type of gearbox Pinion change gear 
Synchromesh gears I - IV 
Gear transmission I. 3,98; II. 2,29; III. 1,45; IV. 1,0; R. 3,74 
Differential ratio 3,54: from 11.77: 3,58 
Maximum speed 190 km/h 
Accelerations 10,6 s 
Comments Acceleration with shifting through from 0 - 100 km/h; loaded with 2 persons 
Fuel consumption 9,6/12,8/17,3 l 
acc. to guideline 80/1268/EWG; values for 90 km/h / 120 km/h / city cycle 
Coup‚s of the series 123
Mercedes-Benz type 280 C
Gearbox 4-speed autom. gear shift 
Availability by request 
Shifting Switch lever at steering wheel or in car center 
Clutch hydr. torque converter in autom. gear 
Type of gearbox Planet gear 
Synchromesh gears  
Gear transmission I. 3,98; II. 2,39; III. 1,46; IV. 1,0; R. 5,47 
Differential ratio 3,54: from 11.77: 3,58 
Maximum speed 185 km/h 
Accelerations 11,3 s 
Comments Acceleration with shifting through from 0 - 100 km/h; loaded with 2 persons 
Fuel consumption 11,1/14,0/17,7 l 
acc. to guideline 80/1268/EWG; values for 90 km/h / 120 km/h / city cycle