Mercedes-Benz 123 Coupé 1977–1985 car dimensions: 4640 mm long, 1786 mm wide and 1395 mm high. Unladen weight is 1,375 kg. Braked towing is 1,500 kg.
The cabin has wood trim on the dash and console, anatomically shaped seats with breathable wool-rich fabric matched to the suspension, and a climate system with ten air inlets adjusted by one control that changes the air every 25 seconds. Optional items include electric windows, central locking, heated seats, electric sunroof with wind deflector, cassette stereo, and Tempomat cruise control. From 1980 ABS was optional and from 1982 a driver airbag was optional. The pillarless two-door layout gives an open feel with supportive fronts for long trips and usable rears for occasional passengers.
Boot space is 500 litres, a good volume for a coupé that handles luggage well on tours.
Payload is 520 kg. Braked towing reaches 1500 kg and unbraked 725 kg. Optional self-levelling rear suspension helps with loads.
The cabin is driver-focused with supportive front seats that can be ordered in leather, velour, cloth or MB-Tex, plus wood trim on the dash and console. Pillarless side windows give clear all-round views. An optional sliding sunroof, power windows, automatic climate control and heated front seats add comfort for long trips. Rear space suits occasional passengers.
Petrol four- and six-cylinder engines plus five-cylinder diesels available
Oil and filter changes form the core of regular servicing
Reinforced safety passenger cell with high-strength pillars and controlled crumple zones
Four-wheel disc brakes standard
ABS optional from August 1980
Driver airbag optional from January 1982
Engines run on petrol or diesel depending on the model chosen. Regular fuel filter attention keeps them reliable over high mileages.
Servicing centres on timely oil and filter changes along with checks on timing chains, suspension bushes and vacuum systems. The mechanical simplicity means many jobs stay straightforward for specialists.
Safety rests on a strong passenger cell, energy-absorbing front and rear zones, padded interior parts and three-point belts. Later options added ABS and a driver airbag with belt tensioners.
Keep the car by watching for rust in floors, doors, sunroof tray and jacking points. Parts remain available and the design rewards consistent maintenance with long service life.
Length 4640 mm, Width 1786 mm, Height 1395 mm, Wheelbase 2710 mm (123 Coupé 1977–1985)
Sources: manufacturer data, auto-data.net, autoevolution.com, vehiclesizes.com, engineindetail.com and Mercedes-Benz public archive, Wikipedia.