Is the RS3 Competition Limited the final 5-cylinder Audi?
Audis aren’t really regarded as high-performance investment cars the way Mercedes-AMGs and most BMW M GmbH cars are. However, the 5-cylinder Audi RS models are different...
Rare engine configurations make performance cars more valuable. And there’s few engine types rarer than a 5-cylinder Audi. Enter the latest RS3 Competition Limited.
Nobody else makes a 5-cylinder production petrol engine anymore except Audi. Until a few years ago, in 2020 to be exact, you could still buy a Ranger with Ford’s 5-cylinder, 3.2-litre turbodiesel. A few years before that, Volvo phased out its 5-cylinder petrol engines.
The high-performance car market is about status and perception. But mechanical differences play a big role in creating that aura of rarity enhancing vehicle status. The worst thing you can do as a performance car sub-brand is give buyers lots of features without any rare mechanical engineering feats.
For Audi, the novelty of its 5-cylinder engines is one of the brand’s few real differentiators when it competes for wealth-driving enthusiast customers with AMG and BMW M. Audi’s latest 5-cylinder model is the RS3 Competition Limited. And the question is: could this be the last 5-cylinder Audi and the most collectable?
Why are there so few 5-cylinder cars?
Audi’s official reason for creating the RS3 Competition Limited is as a homage car. It celebrates 50 years of Audi’s 5-cylinder engines tracing their origins to Audi’s revolutionary Ur-Quattro. This is the car that revolutionised Audi’s brand standing and set it on a journey to become a true German premium and high-performance driving brand.
But why have 5-cylinder engines become so rare? If they are the perfect answer to the need for more power than a 4-cylinder, but fewer emissions than a 6-cylinder, why aren’t there more 5-pots in production?
Five-cylinder engines have real advantages over 4-pots, especially in high-power applications. Why? Because a high-performance 5-cylinder engine runs smoother than a 4 (despite the former having inherent mechanical imbalance). Versus 6-cylinder engines, meanwhile, the 5-cylinder nearly matches power output but is smaller and easier to package. And that’s really important in a compact performance car.
If, then, 5-cylinder engines are so great, why is only Audi still making one? The off-cylinder count, which helps create that unique and appealing 5-cylinder engine sound, is also the configuration’s weakness. Even-cylinder engines are inherently more balanced than engines with an odd number of cylinders. That means that balancing a 5-cylinder requires balancing shafts, which add cost and complexity.