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Citroën Traction Avant 15 G 1938-1947

© Copyright: J.Cats.

The 15 Six is the worthy succesor of the 22. The 22 was never put into production, but in 1938 the 15 six gives Citroën the prestige car they always wanted.

A 15 Six with serial number 680 000 and engine number 001834 is presented for type approval which is granted on February 15th 1938.

YearTotal # builtSerial numbers
1938Berline: 90680 000 - 680 090
1939Berline: 1818
Familiale: 277
Limousine: 213
680 091 - 682 479
1946Berline: 202682 480 - 682 690
1947Berline: 49682 691 - 682 730

Here are the characteristics of the 15 Six, starting in 1938


  • Front axle:
    the front axle is both longer and wider then it's 11 counterpart. It features double wishbones that are angled towards the rear and integral wing supports. Shockabsorbers are fitted to the rear of wishbones as on the 1935 7 & 11. Torsion bars have increased diameter to carry the extra load of the very heavy engine. Because of the longer cradle, the wheelbase of these cars is longer then the 11.

  • Steering:
    Steering is the cremailliere setup identical to that of the 11 but with longer steering rods to span the wider track.

  • Engine:
    The engine is basically 11/2 11 engine with the same 78x100 bore and stroke. This results in 2867cc, 76 bhp @ 3800 rpm, topspeed 125 km/h. Both the head and the block are cast iron which makes it a very heavy unit. Becuase of the long development time, there are several improvements:
    • The sparkplugs are now accesible without having to work through the gear operating rods.
    • The oil level is read by looking at the height of a rod through glass mounted on the side of the engine.
    • The oil filler is not located beneath the bonnet hinges but moved to the right for increased accessability.
    • All fluid level checkpoints are now on the left side together with the distributor which means only 1 bonnet side has to be openend while checking.
    • The engine turns left (counterclockwise) looking at the front of the engine while normally engines run the other way around.
    • The fuelfilter is located in the boot.

  • Engine mounts:
    The 15 six engine suspension is similar to the Pausodyne system as found on the other TAs. The rear suspension points are much larger though and the front suspesnion point is not mounted to a bridge over the cradle but a bar which spans the cradle. The bar goes through the top of the gearbox.

  • Gearbox:
    The gearbox is of totally different design and appearence compared to the 4 cylinder gearbox. It has 3 axles compared to the normal 2 and this makes the gearbox much shorter. This is necesary to clear the bigger radiator which is not mounted on top of the gearbox but in front of it. In the radiator is a hole which give acces to the crankstart facility.

  • Rear axle:
    The rear axle is identical to that of the 11, but for the larger (12") brakedrums.

  • Exhaust:
    The exhaust features double pipes up to the silencer and with a square tailpipe from the silencer onwards. The exhaust manifold is a very big and heavy item which occupies most of the room on the right of the engine.

  • Fuel tank:
    The fuel tank has 70 liter capacity.


  • Bumpers:
    The bumpers are the same as on all Traction Avants until 1952 but with overiders.

  • Horns:
    On all 15 sixes the horns are mounted on the bumper. They can't be fitted on top of the gearbox as on the 11 because of the bigger radiator.

  • Grille:
    The chevrons are mounted behind the grille with the grille painted. The crank start hole is the same size as the pre war 11.

  • Front wings:
    Wings are bigger then the 11 because of the increased track. On the first series of 90 cars the wings are made out of aluminium.

  • Headlights:
    The headlights are even bigger then the ones on the 11. The are chromed.

  • Bonnet:
    The bonnet doesn't have shutters but louvres as found on all post war TAs. On the first series of 90 cars the bonnet is made out of aluminium.

  • Windscreen surround:
    The 15 Six has the same windscreen surround as the 11 of the same year thus an aluminium one.

  • Wheels:
    The 15 Six has pilote wheels (5 bolts), 185x400 as on the long wheel base 11s. Both long and normal wheelbase 15 Sixes carry the same size.

  • Body:
    The 15 Six body is largely identical to that of the 11B. The bulkhead and jambonneaus are different because of the 15 Six engine mounts and different gearlever mechanism. The dashboard is different because of the gearlever mechanism. The left rear of the body is different becuase of the exhuast which runs over the back axle and through a special tunnel in the body.

  • Doors:
    Doors are identical to those of the 11B but with thicker profiled trim strips.

  • Rear wings:
    The rear wings are identical to those found on the 11B with Pilote wheels.

  • Rear lights:
    The 15 Six has one rear light on the license plate holder mounted on the left wing.

  • Spare wheel cover:
    The spare wheel cover is identical to that on the 11B but larger in diameter because of the 185x400 wheel underneath.


  • Dashboard:
    The dashboard is identical to that of the 11B but for a few things. The speedometer has white digits on a black background with a fuel meter that reads up to 70 liter and a clock in the middle of the dash. The gearlever gate is bigger and there are two vertical trim strips on the dashboard. Above the windscreen is a net for carrying maps and such.

  • Front seats:
    The front seats have Pullman (square and thick) cushions compared with velours upholstery. On the rear of the front seats are pockets.

  • Rear seats:
    The rear bench is upholstered the same way as the front one. The 15 Six features a retractable armrest in the middle of the back rest.


In 1939 the production is finaly well underway. The Familiale and Limousine are now also available. From July onwards the speedo has a beige/yellow background with black digits.


From the end of 1939 onwards the chevrons are in front of the grille. In February the 15 Six production is ceased because of the war.


In February the first post war 15 Six rolls of the production line. The 1946 cars are identical to the pre war cars with the exception of the headlights which are now painted instead of chromed. The knobs on the dashboard are now of the later oval type with a letter engraved. Only berlines are available for now.


Until May 1947 the last 39 15 Six G cars are built. In June the 15 Six G is replaced by the 15 Six D.

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