Audi Type K

Open Touring / Convertible 1921–1925 50 PS Petrol

The Audi Type K was Audi's return to production after the First World War — a robust 4.7-litre, 50 PS touring car that re-established the brand in the difficult economic climate of Weimar Germany and demonstrated Audi's commitment to building quality automobiles despite the era's challenges.

Horsepower (50 PS)

~28s

0–100 km/h (est.)

~90km/h

Top Speed

1921

Year Introduced

Overview

The Audi Type K was introduced in 1921 as Audi's first post-war model — the brand's response to a Germany recovering from military defeat, territorial loss, and the beginning of the inflation crisis that would culminate in the Weimar Republic's hyperinflationary collapse of 1923. Building a large, powerful, and expensive automobile in this environment required considerable commercial courage, but Audi's management judged that the German upper-middle class — largely intact as a purchasing group despite the war's economic disruptions — would continue to demand quality touring cars. The Type K used a 4,655 cc four-cylinder engine producing 50 PS, making it Audi's most powerful car to date, with a four-speed sliding-mesh gearbox and shaft drive to a live rear axle. The car was offered in multiple body styles by specialist German coachbuilders, including open touring Torpedo bodywork, enclosed limousine bodies, and convertible Cabriolet configurations.

The Type K's 14/50 PS designation — following German taxation convention — indicated 14 tax-horsepower for registration and taxation purposes, with the actual 50 PS engine output in practice. The car was substantial in size and weight — typical of quality touring cars of the early 1920s — with a long wheelbase that provided comfortable accommodation for four passengers plus luggage for extended touring journeys. Despite the economic turbulence of the Weimar years, including the catastrophic 1923 hyperinflation that briefly made German currency almost worthless, Audi managed to maintain production and develop the Type K's successor models. The Type K established important customer relationships with German business and professional buyers who would go on to purchase subsequent Audi models — the Type M and later the larger K-derivative variants.

The Type K remained in production until approximately 1925, when it was gradually succeeded by the Type M with its refinements and improvements. The Type K represents an important but often overlooked chapter in Audi history — the period between the Alpensieger glory of 1912–1914 and the technical innovation of the 1930 Audi Front, when the brand quietly maintained quality production through some of Germany's most difficult economic years. Any surviving Type K example is of considerable historical interest as a product of this challenging period, and the Audi Museum maintains documentation of the model's development and production history.

Type K in Pictures

Visual references for exterior styling, cabin design, and key details. Images fall back gracefully on load error.

The Audi Type K — Audi's first post-World War I model, reintroducing the brand to a German automotive market recovering from the devastation of war. The K's 4.7-litre engine and robust construction made it a prestigious choice for touring in the early 1920s.

The Audi factory at Zwickau — where the Type K was assembled in the difficult economic conditions of post-war Germany. The Weimar Republic's hyperinflation crisis of 1923 severely disrupted production, but the Type K nonetheless established Audi's continued presence in the upper-middle market segment.

August Horch — the engineering visionary who founded Audi. The Type K represented a continuation of Horch's engineering philosophy: a large, powerful, and reliable vehicle capable of sustained high-speed touring on Germany's improving road network of the 1920s.

The Auto Union emblem — The Type K was produced before the 1932 Auto Union merger, during a period when Audi was establishing the brand equity that would make it a valued component of the eventual four-brand alliance. The K's quality and reliability built customer trust that carried the Audi name through the turbulent 1920s.

Key Specifications

Body: Open torpedo/tourer, enclosed limousine, or Cabriolet — coachbuilt bodywork on standard Audi Type K chassis
Engine: 4,655 cc inline-4, side-valve — approximately 50 PS; 14/50 PS German taxation designation
Gearbox: 4-speed sliding-mesh manual — no synchromesh; double-declutching required for all ratio changes
0–100 km/h: approx. 28–30 s | Top speed: approx. 85–90 km/h — competitive for early 1920s touring
Suspension: Semi-elliptic leaf springs front and rear on ladder chassis — friction dampers on better-equipped variants
Drive: Rear-wheel drive, shaft final drive to live rear axle — conventional transmission layout
Brakes: Mechanical drum brakes on all four wheels (later production) or rear only (early) — rod-operated, requiring regular adjustment
Production: 1921–1925 | Factory: Audi, Zwickau | Context: Audi's first post-World War I model

Variant Comparison

Variant	Engine	Power	Drive	Best For
Type K Torpedo (open tourer)	4.7L inline-4	50 PS	RWD	Open touring use — the Torpedo body style is the most authentic and period-appropriate configuration for a Type K intended for driving events; the open bodywork and practical seating make it the most usable variant for pre-war touring events
Type K Pullman Limousine	4.7L inline-4	50 PS	RWD	Maximum collector appeal — a Type K Cabriolet with documented history and original coachbuilder identification represents the highest-value and most visually distinctive configuration for the specialist collector market
Type K Cabriolet	4.7L inline-4	50 PS	RWD	Enclosed comfort — a Type K Pullman Limousine body represents the luxury touring intent of the model's formal specification; the most comfortable variant for passengers but the least sporting and least valuable in collector terms

Competitor Snapshot

Model	Strength	Compromise
Horch 10/50 PS (1922)	The Horch 10/50 PS (1922) offered the prestige of the Horch brand — August Horch's original company with his name still on the cars — and comparable power output in a vehicle with even more impressive engineering quality; Horch positioned above Audi in the German market hierarchy	The Horch was more expensive than the Type K, placing it in a higher market segment; buyers who could not afford a Horch found the Audi Type K the natural step down without sacrificing quality, giving Audi a clear positioning advantage at its price point
Mercedes 16/50 PS (1921)	The Mercedes 16/50 PS offered the most prestigious German brand name of the period and strong engineering credentials from Daimler's racing programme; Mercedes's brand equity exceeded Audi's in the early 1920s, attracting buyers for whom brand status was paramount	The Mercedes was priced above the Audi Type K and offered the buyer a degree of ostentation that the more understated Audi buyer might not require; Audi's value proposition of quality without premium brand cost was a genuine market differentiator
Wanderer W9 (1921)	The Wanderer W9 (1921) offered a more compact, lighter, and cheaper alternative to the Audi Type K — appealing to buyers in a lower price segment who wanted a quality German touring car without the expense of the larger Audi	The Wanderer W9 was significantly smaller and less powerful than the Type K — it occupied a lower market position that did not directly compete with Audi's upper-middle class target buyer; Audi's larger displacement and output gave it a clear advantage for long-distance touring use

Cost-of-Ownership Estimator (Azerbaijan)

Annual distance (km)Fuel consumption (L/100km)Fuel price ($/L)Annual service budget ($)Annual insurance ($)Annual tires ($)

Annual fuel use: 54 litres
Annual fuel cost: $35
Total yearly estimate: $15535
Monthly average: $1295

Surviving Audi Type K examples are extremely rare — the economic difficulties of 1920s Germany meant that many were kept in service until they wore out, and the passage of a century has reduced the surviving population to very few examples; any offering requires thorough provenance verification.
The 4.7-litre four-cylinder engine uses non-hardened bearing journals and period gasket materials incompatible with modern engine oils; specialist vintage engine oil must be used, and engine rebuilding requires a workshop with experience in pre-war German machinery.
Body panels and interior materials for the Type K have no parts supply — all restoration requires specialist fabrication from period materials or careful adaptation of equivalent items; a sympathetic body restoration on a Type K is a major specialist undertaking.

Maintenance & Service in Azerbaijan

Engine lubrication with SAE 30 monograde mineral oil — modern multigrade and synthetic oils are incompatible with the Type K's period bearing materials; oil should be changed every 1,000 km or once per season at minimum, using only period-specification mineral oil.
Magneto or coil ignition system maintenance — the Type K's ignition system requires clean contact points, correct ignition timing, and verification of spark plug condition before each driving session; incorrect ignition causes misfiring and engine damage on sustained driving.
Gearbox and differential oil maintenance — the Type K's sliding-mesh gearbox uses period gear oils that must be verified for compatibility; modern GL5 gear oils contain additives that damage yellow metal (brass and bronze) components in period gearboxes.
Chassis lubrication of all grease nipples and oil cups — the Type K has numerous lubrication points on suspension joints, steering links, wheel bearings, and propeller shaft universal joints; failure to lubricate leads to accelerated wear of irreplaceable components.
Cooling system maintenance with period-specification coolant — the Type K's cooling system uses copper and brass components that are damaged by modern ethylene glycol antifreeze; use only traditional antifreezes compatible with copper radiators or maintain with clean distilled water and a period-compatible corrosion inhibitor.

Used Type K Buying Checklist

Engine number verification against factory records — the Type K's engine number must match surviving factory documentation or Audi Museum records; engine number discrepancies indicate the possibility of a non-original engine, affecting both value and authenticity.
Cold-start and warm-up assessment — start the engine from cold and monitor oil pressure, temperature, and idle quality; blue smoke from cold start indicates worn piston rings or valve guides that require specialist vintage engine rebuilding.
Gearbox function assessment with double-declutching technique — the Type K's sliding-mesh gearbox requires double-declutching for smooth upshifts and downshifts; crunching or difficulty engaging ratios indicates worn synchro rings (none exist) or incorrect technique — verify with a period vehicle specialist.
Body structure assessment — the Type K's coachbuilt body uses wooden structural members that absorb moisture and can rot; tapping the body panels and checking for soft spots, visible rot, or movement in body joints reveals the extent of structural work required.
Wheel and tyre condition — the Type K uses beaded-edge or early wired-on tyre technology in dimensions only available from specialist vintage tyre suppliers; verify tyre condition, rim integrity, and availability of correct replacement tyres before any driving commitment.
Import documentation and historic vehicle status — a Type K imported to Azerbaijan requires customs documentation as a historic vehicle; operating on public roads requires historic vehicle registration and specialist classic vehicle insurance appropriate for a car of this age and rarity.

Type K FAQ — Azerbaijan Buyers

Q: What does "Type K" mean in the Audi model hierarchy?

The Audi Type K's designation follows the sequential alphabetical system Audi used for its pre-war models — Type A (1910), Type B, Type C, Type D, Type E, with the Type K following after the alphabetical progression was interrupted by the First World War. The "K" is simply the next letter in the sequence after the war years, not an abbreviation of any specific attribute. The designation system was used by Audi from its founding through the early 1920s, with each subsequent Type letter representing a development or successor model. After the Type K, Audi produced the Type M (1924) and subsequent models that used the same designation convention until the brand moved to numeric designations in the late 1920s.

Q: How did the Audi Type K manage production during the German hyperinflation of 1923?

The German hyperinflation of 1923 — during which the exchange rate reached 4.2 trillion Marks to one US dollar at its peak — was catastrophic for German manufacturing, but Audi managed to survive through several strategies. The company held physical assets (machinery, inventory, property) that retained value in real terms even as the currency collapsed, and it was able to rapidly adjust pricing to match the depreciating Mark. Wealthy German buyers who had assets in foreign currencies or physical commodities could still afford luxury goods, and some sales were conducted through barter or foreign currency payment. Audi also benefited from the Reichsbank currency stabilisation of November 1923, which ended the hyperinflation and allowed a return to more normal business conditions. The Type K's production continued through these difficulties, a testament to both Audi's management and the demand for quality automobiles that persisted even in economic crisis.

Q: Is the Audi Type K available to buy today?

A genuine Audi Type K is an exceptionally rare find — far rarer than most collectors realise, because the combination of Germany's wartime destruction, post-war scrap drives, and the simple passage of a century have reduced surviving numbers to almost nothing. The author has not been able to identify any documented Type K currently in private hands — most known surviving examples appear to be in institutional collections or among very specialist German pre-war Audi collectors. If a Type K were to appear at auction, it would likely command €80,000–€200,000 or more depending on condition and completeness, as pre-war Audi models have seen significant value appreciation among collectors who appreciate the brand's founding heritage.

Q: What was the Type K's market position in the early 1920s?

The Audi Type K was positioned in the German upper-middle market — above the mass-market vehicles from firms like Opel and NAG, but below the true luxury cars from Horch, Mercedes, and Maybach. Its target buyer was the German professional class: doctors, lawyers, industrialists, and business owners who needed a reliable, quality-built touring car for both business and leisure use. The Type K's 4.7-litre engine and 50 PS output gave it adequate performance for sustained touring at the speeds possible on Germany's road network of the early 1920s, while its quality of construction compared favourably to similar-priced competitors from Wanderer and various smaller German manufacturers. The Type K's pricing was high relative to worker wages of the period, confirming its positioning as a vehicle for the prosperous rather than the working class.

Q: Can a Type K be driven at pre-war vehicle events today?

An Audi Type K in good mechanical condition could participate in pre-war vehicle events such as those organised by VSCC (Vintage Sports-Car Club) in the UK, the AvD Oldtimer Grand Prix in Germany, or various national historic vehicle federations. The car is technically eligible for most pre-1940 categories. The practical requirements include correct period-specification fuel (ethanol-free), specialist driver knowledge of pre-war vehicle technique (double-declutching, managing drum brakes with long stopping distances), and a qualified mechanic capable of maintaining period machinery accompanying the car. At the speeds involved in pre-war touring events, the Type K would be entirely competitive with its contemporary rivals and would represent a significant rarity at any gathering of early automotive heritage.

Should You Buy the Audi Type K?

The Audi Type K is a rare and historically significant pre-war automobile — best suited to institutional collections or the most specialist pre-war vehicle collectors with access to German vintage car restoration infrastructure.

For Azerbaijani automotive enthusiasts, the Audi Type K represents a fascinating chapter in the brand's history that is rarely discussed — the quiet persistence of quality production through Germany's most economically turbulent decade. The Type K is not the glamorous Alpensieger or the technically revolutionary quattro, but it demonstrates that Audi's commitment to engineering quality survived the First World War and the economic chaos that followed. For practical appreciation, the Audi Museum Mobile in Ingolstadt tells this story far more accessibly than any private ownership could justify. If historical significance in an accessible package appeals to you, the Audi Cabriolet (1991–2000) carries a similar spirit of quality convertible touring for a fraction of the complexity.