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Mercedes-Benz 38/250 SS TT

(1929 model)

Brief specs of 1929 Mercedes-Benz 38/250 SS TT

4-door 5-seater roadster, 6-cylinder 12-valve straight (inline) engine, SOHC (single overhead camshaft), 7069 cm3 / 431.4 cu in / 431.4 cu in, 164.1 kW / 220.1 hp / 220.1 hp @ 3000 rpm / 3000 rpm / 3000 rpm, rear wheel drive, 185 km/h / 115 mph / 115 mph top speed

units: metric UK US

Basic (general) data

Marque (make)Mercedes-BenzIssued from1929
Model38/250 SS TTIssued until
Serie38Number made
Model familyBody construction
Model codeBody designation


Base platformNumber of doors4
Bodywork typeroadsterNumber of seats5
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length5080 mm / 200.0 in / 200.0 inTotal (curb) weight2134 kg / 4705 lb / 4705 lb
Width1727 mm / 68.0 in / 68.0 inDry weight
HeightLoad capacity
Wheelbase3404 mm / 134.0 in / 134.0 inGross (max.) weight
Track front1422 mm / 56.0 in / 56.0 inTowing weight
Track rear1422 mm / 56.0 in / 56.0 inWeight distribution (front)
Ground clearanceFuel capacity
Length/wheelbase ratio1.49  


Drag coefficient (Cd, Cx, Cw)Frontal area (A)
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)


Engine CodeTotal number of cylinders6
Engine Typestraight (inline) Total number of valves12
Engine ManufacturerMercedes-BenzValves per cylinder2
Engine constructionBore100.0 mm / 3.94 in / 3.94 in
FuelStroke150.0 mm / 5.91 in / 5.91 in
Fuel detailsBore/Stroke ratio0.67
Fuel supply2 M-B carbsEngine displacement7069 cm3 / 431.4 cu in / 431.4 cu in
Engine Main bearingsUnitary capacity1178.17 cm3/cylinder / 71.896 cu in/cylinder / 71.896 cu in/cylinder
Cam DesignSOHC (single overhead camshaft)Compression ratio
SumpMax. output power164.1 kW / 220.1 hp / 220.1 hp at 3000 rpm / 3000 rpm / 3000 rpm
AspirationsuperchargedMax. torque at
Compressor typeMaximum rpm
IntercoolerMax. net output (power at the wheels)99.6 kW / 133.5 hp / 133.5 hp (est.)
CoolantwaterSpecific output23.2 kW/l / 0.510 bhp/cu in / 0.510 bhp/cu in
Catalytic converternoSpecific torque


Transmission typeNumber of gears
Wheel driverear wheel driveTop gear (drive) ratio1.36
  Final gear (drive) ratio2.76


Acceleration 0-50 mph (80 km/h)Top (maximal) speed185 km/h / 115 mph / 115 mph
Acceleration 0-60 mph (97 km/h)8.00 s / 8.00 s / 8.00 sPower-to-weight ratio103.1 kW/ton / 78.1 bhp/ton / 78.1 bhp/ton
Acceleration 0-100 km/hFuel consumption, City (urban)
Acceleration 0-100 mph (160 km/h)Fuel consumption, Road (extra-urban)
Acceleration 80-120 km/h (50-70 mph) in topFuel consumption, Mixed (combined)
Standing ¼mile time Fuel consumption, Euro
Standing kilometer time CO2 emissions


Engine locationfrontEngine alignmentlongitudinal
SteeringSteering details
Turns lock-to-lockTurning circle
Suspension frontSuspension rear
Wheels frontWheels rear
Tyres frontTyres rear
Brakes frontBrakes rear
Brake diameter frontBrake diameter rear
Brakes detailsBraked area

Technical specifications and performance data of Mercedes-Benz 38/250 SS TT


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