Mercedes-Benz W123

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Mercedes-Benz W123
1977 Mercedes-Benz 280E
Automotive industryDaimler Benz
Production1976–1985
2,696,915 built[1]
4-door: 2,397,514
Coupé: 99,884
Estate: 199,517
AssemblySindelfingen, Germany
PredecessorMercedes-Benz W115
SuccessorMercedes-Benz W124
Car classificationExecutive car
Car body style4-door Sedan (car)
2-door Coupé
4-door Station wagon
Internal combustion engine2.0 L Straight-4
2.2 L Straight-4 Diesel engine
2.3 L Straight-4
2.4 L Straight-4 Diesel
2.5 L I6
2.8 L I6
3.0 L Straight-5 Diesel engine
2.0 L Straight-4 Diesel
Transmission (mechanics)4-speed Automatic transmission
4-speed Manual transmission
5-speed Manual transmission
WheelbaseSedan: 2795 mm (110 in)
Coupé: 2710 mm (106.7 in)
VehiclesMercedes-Benz E-Class

The Mercedes-Benz W123 cars were produced by the Germany manufacturer from 1976 to 1985.

The W123 models surpassed their predecessor, the W114/W115 "stroke-8" models, as the most successful Mercedes, selling over 2.5 million cars before being replaced by the W124 after 1985. Also in some cases a successor, the additional range of smaller Mercedes-Benz W201 models was introduced in 1982.

Contents

Naming


As usual, model names were related to engine sizes, type of engine and chassis type

  • D for Diesel,
  • E for Einspritzung (fuel injection)
  • Lang for Long Wheelbase
  • T for Transport and Touring (estate/station wagon)
  • C for Coupé

Model history


Mercedes-Benz C123
Mercedes-Benz W123 saloon (Euro-spec)
Mercedes-Benz W123 sedan (US)
Mercedes-Benz 300TD estate
Mercedes-Benz 300CD Turbodiesel coupe (US-version)

Mercedes-Benz introduced the W123 four-door versions in January, 1976[2]. While there was some technical similarities to their predecessors, the new models were larger in wheelbase and exterior dimensions. The styling was also updated, although stylistic links with the W115 were maintained. Initially, all models except 280/280E featured quad unequal-size round headlights and the latter large rectangular units. When facelifted these units became standard across the range. All W115 engines were carried over, with the 3 litre Straight-5 diesel model being renamed from "240D 3.0" to "300D" (as it had already been called before in North America markets). The only new engine was the 250's 2525 ;cc Straight-6 (Type M123, a short-stroke version of the 2.8 litre six Type M110) that replaced the old 2496 cc Type M114 six.

In the spring of 1976, a Coupé version was introduced on a shorter wheelbase than the saloon (2710 mm (106.7 in) versus 2795 mm (110 in)) for the Sedan (car). This W123C/CE was available as a 230C (later 230CE) and as a 280C/CE in most markets; in North America there were additional 300CD versions with naturally aspirated, later turbocharged 3 litre diesel engines.

From August, 1977, long wheelbase versions (3425 mm (134.8 in)) were produced. These were available as 7/8 seater saloons with works bodies or as a chassis with complete front body clip, the latter serving as the base for Ambulance and Hearse bodies by external suppliers like Binz or Miesen. These "Lang" versions could be ordered as 240D, 300D and 250 models.

At the Frankfurt Auto Show in September, 1977 the W123T estate was introduced; the T in the model designation stood for "Touring and Transport". All engines derivative except "200TD" were available in the range. T production began in March, 1978 in Mercedes' Bremen factory.

In early 1979, the diesel models power output was increased; power rose from 55 PS (54 hp/40 kW) to 60 PS (59 hp/44 kW) in the 200D, from 65 PS (64 hp/48 kW) to 72 PS (71 hp/53 kW) in the 240D and from 80 PS (79 hp/59 kW) to 88 PS (87 hp/65 kW) in the 300D; at the same time, the 220D went out of production.

The first Mercedes turbo diesel production W123 appeared in September, 1979. This was the 300 TD Turbodiesel, available with automatic transmission only. In most markets, the turbocharged 5-cylinder 3 litre diesel engine (Type OM617) was offered only in the T body style, while in North America it was also available in saloon and coupé guises.

June 1980 saw the introduction of new Straight-4 petrol engines (Type M102). A new 2 litre four with shorter stroke replaced the old M115, a fuel-injected 2.3 litre version of this engine (in 230E/TE/CE) the old carburetted 230. Both engines were more powerful than their predecessors.

In 1980/81 the carburetted 280 versions went out of production; the fuel-injected 280E continued to be offered.

In September, 1982, all models received a mild facelift. The rectangular headlights, previously fitted only to the 280/280E, were standardized across the board, as was power steering. Since February, 1982, an optional 5-speed manual transmission was available in all models (except 300 TDT).

W123 production ended in November, 1985. Most popular single models were the 240D (455,000 built), the 230E (442,000 built) and the 200D (378,000 built).

W123 introduced innovations including Anti-lock braking system (optional from August, 1980), a retractable steering column and an airbag for the driver (optional from 1982).

Available options included MB-Tex (Mercedes-Benz Texturized Punctured Vinyl) upholstery or velour or leather upholstery, interior wood trim, right hand side exterior mirror (LHD models, standard on T models), 5-speed Manual transmission (European market only), 4-speed Automatic transmission (standard in turbodiesel models), power windows with rear-seat switch cut-outs, vacuum powered central locking, rear-facing extra seats (station wagon only), De:Standheizung (prestart timer controller engine heating), self locking differential, sun roof, air conditioning, climate control, headlamp wipers (European market only), Tempomat (cruise control), power steering (standard after 1982/08), seat heating, catalytic converter (available from 1984 for California only, from fall (autumn) 1984 also in Germany for the 230E of which one thousand were built).

Power (vacuum servo) assisted disc brakes were standard on all W123s.

Models (except North America and Japan)


Chassis code Years Model Engine Power Torque
W123.0201976–19802002.0 L M115 Straight-4 94 PS (93 hp/69 kW) @ 4800 158 N·m (117 lb·ft) @ 3000
W123.2201979–19852002.0 L M102 Straight-4 109 PS (108 hp/80 kW) @ 5200 170 N·m (125 lb·ft) @ 3000
W123.2801980–1985200T2.0 L M102 Straight-4 109 PS (108 hp/80 kW) @ 5200 170 N·m (125 lb·ft) @ 3000
W123.1201976–1979 200D2.0 L OM615 Straight-4 Diesel 55 PS (54 hp/40 kW) @ 4200 113 N·m (83 lb·ft) @ 2400
W123.1201979–1985 200D2.0 L OM615 Straight-4 Diesel 60 PS (59 hp/44 kW) @ 4400 113 N·m (83 lb·ft) @ 2400
W123.1261976–1979220D2.2 L OM615 Straight-4 Diesel 60 PS (59 hp/44 kW) @ 4200 125 N·m (92 lb·ft) @ 2400
W123.0231976–19812302.3 L M115 Straight-4 109 PS (108 hp/80 kW) @ 4800 185 N·m (136 lb·ft) @ 3000
W123.2231979–1985230E2.3 L M102 Straight-4 136 PS (134 hp/100 kW) @ 5100 201 N·m (148 lb·ft) @ 3500
W123.0431977–1980230C2.3 L M115 Straight-4 109 PS (108 hp/80 kW) @ 4800 185 N·m (136 lb·ft) @ 3000
W123.2431980–1985230CE2.3 L M102 Straight-4 136 PS (134 hp/100 kW) @ 5100 201 N·m (148 lb·ft) @ 3500
W123.0831978–1980230T2.3 L M115 Straight-4 109 PS (108 hp/80 kW) @ 4800 185 N·m (136 lb·ft) @ 3000
W123.2831980–1985230TE2.3 L M102 Straight-4 136 PS (134 hp/100 kW) @ 5100 201 N·m (148 lb·ft) @ 3500
W123.1231976–1985240D2.4 L OM616 Straight-4 Diesel 65 PS (64 hp/48 kW) @ 4200
from 02/79 72 PS (71 hp/53 kW) @ 4400
137 N·m (101 lb·ft) @ 2400
W123.1251977–1985240D LWB2.4 L OM616 Straight-4 Diesel 65 PS (64 hp/48 kW) @ 4200
from 02/79 72 PS (71 hp/53 kW) @ 4400
137 N·m (101 lb·ft) @ 2400
W123.1831978–1986240TD2.4 L OM616 Straight-4 Diesel 65 PS (64 hp/48 kW) @ 4200
from 02/79 72 PS (71 hp/53 kW) @ 4400
137 N·m (101 lb·ft) @ 2400
W123.0261976–19852502.5 L M123 Straight-6 129 PS (127 hp/95 kW) @ 5500
from 09/79 140 PS (138 hp/103 kW) @ 5500
192 N·m (142 lb·ft) @ 3500
from 09/79 196 N·m (145 lb·ft) @ 3500
W123.0281977–1985250 LWB2.5 L M123 Straight-6 129 PS (127 hp/95 kW) @ 5500
from 09/79 140 PS (138 hp/103 kW) @ 5500
192 N·m (142 lb·ft) @ 3500
from 09/79 196 N·m (145 lb·ft) @ 3500
W123.0861978–1985250T2.5 L M123 Straight-6 129 PS (127 hp/95 kW) @ 5500
from 09/79 140 PS (138 hp/103 kW) @ 5500
192 N·m (142 lb·ft) @ 3500
from 09/79 196 N·m (145 lb·ft) @ 3500
W123.0301975–19812802.8 L M110 Straight-6 156 PS (154 hp/115 kW) @ 5500 222 N·m (164 lb·ft) @ 4000
W123.0331975–1985280E2.8 L M110 Straight-6 177 PS (175 hp/130 kW) @ 6000
from 1978 185 PS (182 hp/136 kW) @ 5800
229 N·m (169 lb·ft) @ 4500
from 09/79 235 N·m (173 lb·ft) @ 4500
W123.0501977–1980280C2.8 L M110 Straight-6 156 PS (154 hp/115 kW) @ 5500 222 N·m (164 lb·ft) @ 4000
W123.0531977–1985280CE2.8 L M110 Straight-6 177 PS (175 hp/130 kW) @ 6000
from 1978 185 PS (182 hp/136 kW) @ 5800
229 N·m (169 lb·ft) @ 4500
from 09/79 235 N·m (173 lb·ft) @ 4500
W123.0931978–1985280TE2.8 L M110 Straight-6 177 PS (175 hp/130 kW) @ 6000
from 1978 185 PS (182 hp/136 kW) @ 5800
229 N·m (169 lb·ft) @ 4500
from 09/79 235 N·m (173 lb·ft) @ 4500
W123.1301976–1985300D3.0 L OM617 Straight-5 Diesel 80 PS (79 hp/59 kW) @ 4000
from 09/79 88 PS (87 hp/65 kW) @ 4400
169 N·m (125 lb·ft) @ 2400
W123.1321977–1985300D LWB3.0 L OM617 Straight-5 Diesel 80 PS (79 hp/59 kW) @ 4000
from 09/79 88 PS (87 hp/65 kW) @ 4400
169 N·m (125 lb·ft) @ 2400
W123.1331981–1985300D Turbo3.0 L OM617 Straight-5 Diesel 125 PS (123 hp/92 kW) @ 4350 245 N·m (181 lb·ft) @ 2400
W123.1501977–1981300CD3.0 L OM617 Straight-5 Diesel 80 PS (79 hp/59 kW) @ 4000
from 09/79 88 PS (87 hp/65 kW) @ 4400
169 N·m (125 lb·ft) @ 2400
W123.1531981–1985300CD Turbo3.0 L OM617 Straight-5 Diesel 125 PS (123 hp/92 kW) @ 4350 245 N·m (181 lb·ft) @ 2400
W123.1901978–1985300TD3.0 L OM617 Straight-5 Diesel 80 PS (79 hp/59 kW) @ 4000
from 09/79 88 PS (87 hp/65 kW) @ 4400
169 N·m (125 lb·ft) @ 2400
W123.1931980–1985300TD Turbo3.0 L OM617 Straight-5 Diesel 125 PS (123 hp/92 kW) @ 4350 245 N·m (181 lb·ft) @ 2400

North America and Japan

In these markets the following models were offered...[3]:

Model Years Engine Power Torque
230 MY 1977−1978 M115 55.0 hp (41 kW) @ 4800 125 lb·ft (169 N·m) @ 2500
240D MY 1977−1983 OM616.912 62 hp (46 kW) @ 4000
from MY 1981 67 hp (50 kW) @ 4000
97 lb·ft (132 N·m) @ 2400
280E MY 1977−1981 M110 142 hp (106 kW) @ 5750
from MY 1980: 140 hp (104 kW) @ 5500
149 lb·ft (202 N·m) @ 4600
from MY 1980: 145 lb·ft (197 N·m) @ 4600
280CE MY 1978−1981 M110 142 hp (106 kW) @ 5750
from MY 1980: 140 hp (104 kW) @ 5500
149 lb·ft (202 N·m) @ 4600
from MY 1980: 145 lb·ft (197 N·m) @ 4600
300D MY 1977−1981 OM617.912 77 hp (57 kW) @ 4000
from MY 1981: 83 hp (62 kW) @ 4200
115 lb·ft (156 N·m) @ 2400
from MY 1981: 120 lb·ft (163 N·m) @ 2400
300CD MY 1978−1981 OM617.912 77 hp (57 kW) @ 4000
from MY 1981: 83 hp (62 kW) @ 4200
115 lb·ft (156 N·m) @ 2400
from MY 1981: 120 lb·ft (163 N·m) @ 2400
300D
MY 1982−1985 OM617.952 120 hp (89 kW) @ 4350
from MY 1984: 123 hp (92 kW) @ 4350
170 lb·ft (230 N·m) @ 2400
from MY 1984: 184 lb·ft (249 N·m) @ 2400
300CD
MY 1982−1985 OM617.952 120 hp (89 kW) @ 4350
from MY 1984: 123 hp (92 kW) @ 4350
170 lb·ft (230 N·m) @ 2400
from MY 1984: 184 lb·ft (249 N·m) @ 2400
300TD
MY 1979−1985 OM617.952 120 hp (89 kW) @ 4350
from MY 1984: 123 hp (92 kW) @ 4350
170 lb·ft (230 N·m) @ 2400
from MY 1984: 184 lb·ft (249 N·m) @ 2400

The North American W123s differ from the European W123s due to United States Department of Transportation requirements.

Notable exterior differences included:

  • Larger bumpers
  • Round, sealed-beam headlights/fog lamps. Early cars were delivered with clear fog lamps through to model year 1979, later units with yellow
  • Location of ID-tag on A-pillar
  • Emission control devices

References

  1. Oswald, Werner (2001). Deutsche Autos 1945-1990, vol.3. Stuttgart: Motorbuch Verlag. p. 99. ISBN 3-613-02131-5. 
  2. All dates in this paragraph according to: Oswald, Werner (2001). Deutsche Autos 1945–1990, vol.3. Stuttgart: Motorbuch Verlag. pp. 96–111. ISBN 3-613-02131-5. 
  3. Mike Covello: Standard Catalog of Imported Cars 1946-2002. Krause Publications, Iola 2002, ISBN 0-87341-605-8, p. 539-43.

See also

External links

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