Few engines have become as closely associated with a brand as Audi’s legendary inline five-cylinder. Introduced in 1976 as a practical engineering solution for the second-generation Audi 100, the engine would evolve into one of the defining elements of Audi’s identity, powering everything from executive sedans and diesel models to the original quattro rally cars, the RS2 Avant and today’s RS 3. Now, Audi Tradition is marking its golden anniversary with a new special exhibition at the Audi museum mobile in Ingolstadt.
Titled “1-2-4-5-3: 50 Years of Audi Five-Cylinder Engines,” the exhibition opened on August 1 and runs through February 28, 2027. The title references the engine’s distinctive firing order, whose unique cadence produces one of the most recognizable exhaust notes in the automotive world. Curated by Stefan Felber, the exhibition brings together seven engine displays and fourteen vehicles that trace the evolution of the five-cylinder across five decades.
The story begins with the Audi 100 5E, whose 2.1-liter fuel-injected engine produced 136 horsepower and demonstrated that an inline five-cylinder could deliver refinement while fitting neatly within Audi’s front-wheel-drive architecture. Turbocharging soon transformed the engine’s character, culminating in the original Audi quattro and later the Group B rally cars that helped establish Audi as a dominant force in international motorsport. By the late 1980s, the same basic architecture was producing as much as 720 horsepower in the fearsome Audi IMSA GTO race car.
The exhibition also follows the engine’s road-car journey through icons such as the Audi 90 quattro, S2 Coupé, Avant RS2, Audi S6, TT RS and RS 3. After disappearing from production in the late 1990s, the five-cylinder returned in 2009 with the 2.5-liter TFSI developed for the TT RS. That modern engine went on to earn nine consecutive International Engine of the Year awards while cementing its place among the most celebrated performance engines of the modern era.
Beyond the cars themselves, the exhibition highlights the engineering decisions that made the five-cylinder such an enduring success. Developed from Audi’s EA827 four-cylinder architecture, it balanced compact dimensions with smooth operation and a character unlike any other production engine. Fifty years later, it remains one of the few powerplants whose sound alone is enough to identify the car long before it comes into view.
Useful Information
Exhibition: 1-2-4-5-3: 50 Years of Audi Five-Cylinder Engines
Location: Audi museum mobile, Audi Forum Ingolstadt, Ingolstadt, Germany
Dates: August 1, 2026 – February 28, 2027
Highlights:
- Seven engine displays spanning five decades
- Fourteen vehicles including the Audi 100 5E, Audi 200 5T, Audi 90 quattro, S2 Coupé, RS2 Avant, S6, TT RS and RS 3
- Historic race cars and concepts illustrating the evolution of Audi’s most iconic engine
Best For: Audi enthusiasts, automotive history fans, motorsport enthusiasts and visitors touring Bavaria.
Allow: Approximately 60–90 minutes for the special exhibition, or 2–3 hours when combined with the museum’s permanent collection.
Nearby: The exhibition is located within Audi Forum Ingolstadt, which also includes the Audi museum’s permanent collection, factory tours (advance booking recommended), Audi shop and restaurants. Ingolstadt is approximately one hour north of Munich by car or rail, making it an easy day trip from the Bavarian capital.
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