Sd.Kfz. 231: Germany’s Eight-Wheeled Heavy Armoured Car

The Sd.Kfz. 231 was the standard heavy armoured car of the German Army during the Second World War, and one of the most advanced armoured cars of its time. Developed in the 1930s as a replacement for the earlier six-wheeled armoured cars, it used an eight-wheeled chassis with all-wheel drive and all-wheel steering, giving it excellent cross-country mobility and a top speed of about 85 km/h on roads. About 1,200 Sd.Kfz. 231 and related vehicles were built, and they served in the reconnaissance battalions of panzer divisions in every theatre, from Poland and France to North Africa and the Eastern Front.

The Sd.Kfz. 231 was armed with a 20 mm KwK 30 automatic cannon and a coaxial MG 34 machine gun, mounted in a small turret, and it carried a crew of four. Its armour, up to 14.5 mm thick, was proof against rifle bullets and shell splinters but not against anti-tank weapons, and its role was reconnaissance, not combat. The vehicle’s most distinctive feature was its ability to drive in either direction at full speed, thanks to a second driving position at the rear, which allowed it to escape from an ambush without turning round. This feature, combined with its speed and mobility, made the Sd.Kfz. 231 a valuable scout, and it was used for probing enemy positions, screening the advance of panzer divisions, and reporting back on enemy movements.

Today the Sd.Kfz. 231 is remembered as one of the best armoured cars of the Second World War, a vehicle that was well designed for its role and that served throughout the war. Surviving examples are rare, but the type is well represented in museums and in the literature on German armoured vehicles. For historians of armoured warfare, the Sd.Kfz. 231 illustrates the importance of mobility and reconnaissance in the German blitzkrieg, and the value of a purpose-built armoured car over a truck-based design.

1. Key Facts

Field	Value
Type	Heavy armoured car
Origin	Germany
Designed	1934–1937 (8-rad version)
In service	1937–1945 (Germany)
Produced	Approximately 1,200 (Sd.Kfz. 231, 232, 233 and 263, 8-rad)
Manufacturers	Bussing-NAG, Magirus, Daimler-Benz
Crew	4 (commander/gunner, driver, rear driver, radio operator)
Weight	Approximately 8.3 tons
Length	Approximately 5.85 m (19 ft 2 in)
Width	Approximately 2.20 m (7 ft 3 in)
Height	Approximately 2.35 m (7 ft 9 in)
Armour	Up to 14.5 mm
Main armament	20 mm KwK 30 automatic cannon
Secondary armament	7.92 mm MG 34 machine gun (coaxial)
Engine	Bussing-NAG eight-cylinder petrol engine, approximately 155 hp
Speed	Approximately 85 km/h (53 mph) maximum on roads
Range	Approximately 300 km (186 miles) on roads

2. Background and Development

German Armoured Cars in the 1930s

The Sd.Kfz. 231 grew out of the German Army’s experience with armoured cars in the 1920s and early 1930s. The Treaty of Versailles had forbidden Germany to build tanks, but armoured cars were permitted, and the German Army used them for reconnaissance and for training. The first German armoured cars were six-wheeled vehicles based on truck chassis, and they proved useful but limited in cross-country mobility. In the mid-1930s, as Germany began to rearm, the army sought a new heavy armoured car with better mobility, and the result was the eight-wheeled Sd.Kfz. 231. The new vehicle was designed from the start as an armoured car, with a purpose-built chassis, rather than as an armoured truck, and it represented a major advance in German armoured car design.

The Eight-Wheeled Chassis

The eight-wheeled chassis of the Sd.Kfz. 231 was its most important feature. All eight wheels were driven, and all eight could be steered, giving the vehicle excellent manoeuvrability and allowing it to turn in a small radius. The chassis was built by Bussing-NAG, and the armoured hull was built by Deutsche Werke and other firms. The vehicle had two driving positions, one at the front and one at the rear, so that it could be driven in either direction at full speed. This was a valuable feature for a reconnaissance vehicle, which might need to withdraw quickly from contact. The Sd.Kfz. 231 entered service in 1937, and it was issued to the reconnaissance battalions of panzer divisions, where it served alongside lighter armoured cars and motorcycles.

Doctrine and the Panzer Division

German doctrine assigned the Sd.Kfz. 231 to the reconnaissance battalions of panzer divisions, where its speed and mobility made it well suited to probing enemy positions, screening the advance of the division, and reporting back on enemy movements. The Sd.Kfz. 231 was also used for liaison duties and for escorting convoys. In theory, the Sd.Kfz. 231 was not meant to fight, but its 20 mm gun gave it a useful self-defence capability, and in practice its crews often found themselves in combat with enemy patrols and light vehicles. The doctrine was sound, and the Sd.Kfz. 231 was used as it was intended, for scouting and for security, rather than for direct combat. Its speed and its ability to drive backwards made it a difficult target.

3. Design

Hull, Chassis and Mobility

The Sd.Kfz. 231 was built on a purpose-built eight-wheeled chassis, with all-wheel drive and all-wheel steering. The armoured hull was mounted on the chassis, and the turret was mounted on top. The design gave the Sd.Kfz. 231 excellent cross-country mobility, and it could operate in mud, sand, and rough terrain that would have stopped a truck-based armoured car. The top speed on roads was about 85 km/h, and the range was about 300 km, giving the vehicle a long operational reach. The suspension was a simple leaf-spring arrangement, and the ride was rough, but the vehicle was reliable and easy to maintain. The engine, a Bussing-NAG eight-cylinder petrol unit producing about 155 horsepower, was adequate for an 8.3-ton vehicle, and it was a standard engine that was widely available.

Armour and Protection

The armour of the Sd.Kfz. 231 was up to 14.5 mm thick, and it was sloped on the hull and turret to improve protection. The hull was built from steel plates welded together, and the sloped design gave the vehicle a distinctive appearance. The armour was proof against rifle bullets and shell splinters, and it could deflect machine-gun fire at longer ranges, but it was not proof against anti-tank weapons. The crew had little protection, and the Sd.Kfz. 231 was not a vehicle to fight in if it could be avoided. The vehicle was designed to avoid being hit, rather than to survive being hit, and its speed and mobility were its main protection. The Sd.Kfz. 231 was also vulnerable to mines, and many were lost to mines on the Eastern Front and in North Africa.

The Rear Driver and Reversible Driving

The most distinctive feature of the Sd.Kfz. 231 was its second driving position at the rear, which allowed the vehicle to be driven backwards at full speed. The rear driver sat facing the rear of the vehicle, with his own steering wheel and controls, and he could take over driving if the vehicle needed to withdraw quickly. This feature was valuable for a reconnaissance vehicle, which might encounter an enemy position and need to escape without turning round, a manoeuvre that would expose the vehicle to fire. The rear driver was also the radio operator, and he operated the radio set from his position. The reversible driving capability was a feature that few other armoured cars had, and it was one of the reasons the Sd.Kfz. 231 was valued by its crews.

Armament and Crew

The armament of the Sd.Kfz. 231 was a 20 mm KwK 30 automatic cannon, mounted in the turret and operated by the commander, who also served as gunner. A coaxial MG 34 machine gun was mounted beside the main gun, and the vehicle carried a large number of rounds for both weapons. The 20 mm gun was effective against light vehicles, infantry, and soft targets, and it could penetrate the armour of light tanks at close range, but it was not an anti-tank weapon. The crew of four was divided between the turret, where the commander worked, and the hull, where the front driver, the rear driver and radio operator worked. The Sd.Kfz. 232 was a radio version with a large frame antenna, and the Sd.Kfz. 233 mounted a short 75 mm gun for fire support. The crew layout was efficient, and the vehicle was well designed for its role.

4. Variants

Sd.Kfz. 231, 232, 233 and 263

The Sd.Kfz. 231 was the basic version, with a 20 mm gun and a radio set. The Sd.Kfz. 232 was a radio version, with a large frame antenna mounted over the hull, and it was used as a command vehicle in reconnaissance units. The Sd.Kfz. 233 was a fire-support version, mounting a short 75 mm KwK 37 gun in an open-topped turret, and it was used to provide direct fire support for reconnaissance units. The Sd.Kfz. 263 was a command version, with additional radio equipment and no turret gun, and it was used by commanders of reconnaissance battalions. About 1,200 vehicles of all these types were built, and they served together in reconnaissance units throughout the war.

The Six-Wheeled Predecessor

Before the eight-wheeled Sd.Kfz. 231, Germany built a six-wheeled version with the same designation, based on a truck chassis. The six-wheeled Sd.Kfz. 231 was built in small numbers in the early 1930s, and it served in the early years of the war, but it was soon replaced by the eight-wheeled version. The six-wheeled vehicle had poor cross-country mobility and was not a success, and it is often confused with the eight-wheeled version. The eight-wheeled Sd.Kfz. 231 was a completely different vehicle, with a purpose-built chassis, and it was the version that served throughout the war and that is remembered today.

The Sd.Kfz. 234 Successor

The successor to the Sd.Kfz. 231 was the Sd.Kfz. 234, known as the Puma, which entered service in 1944. The Sd.Kfz. 234 had a similar eight-wheeled chassis but a more powerful diesel engine, thicker armour, and a 50 mm gun in the later versions. The Sd.Kfz. 234 was a more capable vehicle than the Sd.Kfz. 231, but it was built in smaller numbers and it arrived too late to replace the Sd.Kfz. 231 completely. The Sd.Kfz. 231 remained in service until the end of the war, and the two types served side by side in 1944 and 1945. The Sd.Kfz. 234 was the culmination of German eight-wheeled armoured car design, and it owed much to the Sd.Kfz. 231.

5. Operational History

Poland and France

The Sd.Kfz. 231 first saw combat in the invasion of Poland in September 1939, where it served in the reconnaissance battalions of panzer divisions. In Poland, the Sd.Kfz. 231 performed well, using its speed and mobility to probe Polish positions and to screen the advance of the panzer divisions. In France in May and June 1940, the Sd.Kfz. 231 again served in reconnaissance units, and it was used to exploit the breakthrough through the Ardennes and to race to the Channel coast. The vehicle’s speed was valuable in the mobile warfare of 1940, and its crews reported that it was reliable and easy to maintain. The Sd.Kfz. 231’s service in Poland and France established its reputation as a capable reconnaissance vehicle.

North Africa and the Eastern Front

In North Africa, the Sd.Kfz. 231 served with the Afrika Korps, where its mobility in the desert was valuable and its speed allowed it to operate over long distances. The desert was hard on vehicles, but the Sd.Kfz. 231 proved reliable, and it was used for reconnaissance ahead of panzer columns and for patrolling the vast spaces of the desert. On the Eastern Front, the Sd.Kfz. 231 served from the invasion in June 1941 until the end of the war, and it was used in the advance on Moscow, at Stalingrad, at Kursk, and in the retreat through Poland and Germany. The Eastern Front was the hardest theatre for the Sd.Kfz. 231, with mud, snow, and mines taking a heavy toll, but the vehicle continued to serve, and it was valued by its crews for its mobility and its speed.

Losses and the End of the War

The losses of the Sd.Kfz. 231 were heavy, particularly on the Eastern Front, where many were lost to mines, to anti-tank guns, and to mechanical failure. By 1944, the Sd.Kfz. 231 was increasingly replaced by the Sd.Kfz. 234, but it remained in service in second-line units and in the reconnaissance battalions of infantry divisions. At the end of the war, a small number of Sd.Kfz. 231 vehicles were still in service, and they were among the last German armoured cars to see combat. The Sd.Kfz. 231’s long service, from Poland to Berlin, is a testament to its usefulness, and to the German Army’s willingness to keep a reliable vehicle in service as long as it could still do a job.

6. Performance and Specifications

Strengths on the Battlefield

The strengths of the Sd.Kfz. 231 were its speed, its mobility, and its reversible driving capability. The eight-wheeled chassis gave it excellent cross-country performance, and its top speed of 85 km/h made it one of the fastest armoured cars of the war. The vehicle was reliable and easy to maintain, and its standard engine meant that spare parts were available. The Sd.Kfz. 231 was at its best when it was used as it was intended, for reconnaissance and for screening, rather than for direct combat. Its speed and its ability to drive backwards made it a difficult target, and its crews valued its mobility.

Weaknesses and Trade-offs

The weaknesses were the thin armour, the weak armament, and the vulnerability to mines. The Sd.Kfz. 231 had only a 20 mm gun, and it could not fight enemy tanks or well-protected vehicles. Its armour was thin, and it was vulnerable to anti-tank guns and to heavy machine guns. The vehicle was also complex, with eight-wheel drive and steering, and it was difficult to maintain in the field. The Sd.Kfz. 231 was a reconnaissance vehicle, and its weaknesses were the trade-off for its mobility and its speed. It was not meant to fight, and when it was forced to fight, it often lost.

How the Sd.Kfz. 231 Compared with Rivals

Compared with the Soviet BA-10, the Sd.Kfz. 231 had better mobility and a higher speed, but a weaker gun. The Soviet vehicle had a 45 mm gun, while the German vehicle had only a 20 mm gun. Compared with the British Daimler armoured car, the Sd.Kfz. 231 was faster and more mobile, but it had thinner armour. Compared with the American M8 Greyhound, the Sd.Kfz. 231 was slower and less well armed, but it had better cross-country mobility. The Sd.Kfz. 231 was thus a capable vehicle by the standards of the late 1930s, but it was overtaken by later designs that were better armed and better protected.

7. Comparison

Against Soviet Armoured Cars

In a direct comparison with Soviet armoured cars, the Sd.Kfz. 231 held an advantage in mobility and speed but a disadvantage in firepower. The Soviet BA-10 had a 45 mm gun, while the German vehicle had only a 20 mm gun, and the Soviet gun could destroy the German vehicle at ranges where the German gun could not reply. The German vehicle, however, had eight-wheel drive and could operate off-road, while the Soviet vehicle was confined to roads. German armoured car crews valued the mobility of their vehicles, while Soviet crews valued the firepower of theirs. The comparison shows that the two armies had different priorities, and that both designs were valid for their intended roles.

Against British Armoured Cars

Among British armoured cars, the closest comparison is with the Daimler, which entered service in 1941 with a 2-pounder gun and four-wheel drive. The Daimler was better armed than the Sd.Kfz. 231 and had thicker armour, but it was slower and less mobile off-road. The Sd.Kfz. 231 was faster and more manoeuvrable, and its reversible driving capability was an advantage that the Daimler did not have. Both vehicles were designed for reconnaissance, and both were successful in their roles. The comparison illustrates the trade-off between firepower and mobility that ran through armoured car design in the Second World War.

8. Legacy and Influence

The Standard German Heavy Armoured Car

The Sd.Kfz. 231 was the standard German heavy armoured car of the Second World War, and its legacy is as a well-designed reconnaissance vehicle that served throughout the war. The type was produced in large numbers for an armoured car, and it served in every theatre, from Poland to North Africa to the Eastern Front. The Sd.Kfz. 231’s design, with its eight-wheeled chassis and its reversible driving, influenced the Sd.Kfz. 234 Puma, which became the best German armoured car of the war. The Sd.Kfz. 231 remains a landmark in German armoured vehicle design, and it is remembered as one of the best armoured cars of the conflict.

Reputation and Historical Assessment

Historians have generally regarded the Sd.Kfz. 231 as a successful design, a vehicle that was well suited to its role and that was used effectively by German reconnaissance units. Its service in the blitzkrieg campaigns of 1939 and 1940, and its long service on the Eastern Front, is well documented, and its crews are remembered for their skill in reconnaissance. The Sd.Kfz. 231 is also remembered as a symbol of German armoured car design, and as a vehicle that was, for a time, the eyes of the panzer divisions. Its reputation has been helped by the survival of examples in museums, and by the work of historians who have studied German reconnaissance units in detail.

Lessons for Later Armoured Car Design

The lessons of the Sd.Kfz. 231 were clear: an armoured car needed all-wheel drive, good cross-country mobility, and a reversible driving capability, and it did not need heavy armour if it could avoid being hit. The Sd.Kfz. 234 incorporated these lessons, and it became the standard German armoured car of the later war. The Sd.Kfz. 231 also showed that a purpose-built chassis was better than a truck chassis for an armoured car, and that a small, fast vehicle could be more useful than a larger, slower one. The Sd.Kfz. 231’s design influenced German armoured car design for many years, and its eight-wheeled layout became a feature of later German vehicles.

9. Surviving Examples

Museums in Germany and Britain

A small number of Sd.Kfz. 231 armoured cars survive in museums, although complete examples are rare. The Tank Museum at Bovington in Britain holds a Sd.Kfz. 231, which is displayed as an example of the German heavy armoured car of the Second World War. Other examples are held at the German Tank Museum at Munster and at other museums in Germany. The survival of these vehicles is remarkable given the heavy losses of the war, and they are an important part of the military heritage of both countries. The Bovington example is one of the best-preserved Sd.Kfz. 231 vehicles in the world.

Survivors Abroad and Replicas

Other Sd.Kfz. 231 vehicles survive in private collections, and a small number have been restored to running condition. There are also replicas of the Sd.Kfz. 231, built for films and for re-enactment, and the vehicle is well represented in models and in the literature on German armoured vehicles. The scarcity of surviving Sd.Kfz. 231 vehicles reflects the heavy losses of the war and the small production run, and it makes the museum examples all the more valuable as survivors of a type that was once common on the battlefields of Europe.

10. Frequently Asked Questions

How many Sd.Kfz. 231 armoured cars were built?
About 1,200 Sd.Kfz. 231, 232, 233, and 263 eight-wheeled vehicles were built. Production was carried out by Bussing-NAG, Magirus, and Daimler-Benz, and the type served throughout the war.

What gun did the Sd.Kfz. 231 carry?
The Sd.Kfz. 231 carried a 20 mm KwK 30 automatic cannon and a coaxial MG 34 machine gun. The Sd.Kfz. 233 version mounted a short 75 mm gun for fire support.

Could the Sd.Kfz. 231 drive backwards at full speed?
Yes. It had a second driving position at the rear, with its own steering wheel and controls, so it could be driven in either direction at full speed. This allowed it to withdraw quickly from an ambush without turning round.

Where did the Sd.Kfz. 231 serve?
The Sd.Kfz. 231 served in Poland, France, North Africa, and on the Eastern Front, in the reconnaissance battalions of panzer divisions. It was the standard German heavy armoured car throughout the war.

What replaced the Sd.Kfz. 231?
The Sd.Kfz. 234 Puma, which entered service in 1944, replaced the Sd.Kfz. 231. The Puma had a more powerful engine, thicker armour, and a 50 mm gun in later versions.

Does a Sd.Kfz. 231 survive today?
Yes, although complete examples are rare. The Tank Museum at Bovington in Britain and the German Tank Museum at Munster hold examples, and a small number are in private collections.

11. Sources

• Thomas L. Jentz, Panzer Tracts No. 13: Panzerspahwagen (Armored Reconnaissance Vehicles).
• Walter J. Spielberger, Armoured Vehicles of the German Army 1905-1945.
• The Tank Museum, Bovington, Sd.Kfz. 231 collection records and vehicle guides.
• Chamberlain, Peter, and Ellis, Chris, British and American Tanks of World War II (Arms and Armour Press).
• Steven J. Zaloga, German Armoured Cars of World War Two (Osprey Publishing).
• German War Office, Sd.Kfz. 231 technical manual (wartime publication).