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.
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Why collectable Audis have 5 cylinders
Despite the challenges of engineering 5-cylinder engines for 50 years, Audi has remained strongly committed to the format … and with good reason.
Five-cylinder Audi RS cars offer a powertrain experience that AMG and BMW M can’t rival, even with their best 6-cylinder engines. The sound and powertrain characteristics of a TTRS, RSQ3 or RS3’s 5-cylinder make them amongst the few truly collectable Audis.
There’s nothing new about the latest Audi model with 5 cylinders. The RS3 Competition Limited uses the same 2.5-litre engine that’s been in the RS3 since the first generation launched in 2011.
Tuned here for 294 kW, the Competition Limited version makes no more power than other RS3s of the last few years. And why would Audi alter it? This engine produces all the power you need in a hot hatch. And there’s nothing much Audi could do to enhance its sound signature, which is already so unique.
Nobody quite knows how the product people manage to work out the numbers to justify Audi’s specialised tooling for making these 5-cylinder engines in Hungary. The numbers definitely don’t make commercial sense.
Instead, it’s a testament to Audi’s understanding of how valuable the 5-cylinder is to its brand history and the RS3’s positioning that it has kept the EA855 Evo in production.
Audi RS3 (2015-2022) Buyer’s Guide
Enhancing the analogue driving experience
The one significant upgrade Audi has made with the RS3 Competition Limited is its suspension. The most skilled and technically literate driving enthusiasts know that a resolved suspension setup often matters more than absolute engine power numbers. That’s why this 5-cylinder homage performance model features coilover suspension and a rear stabiliser bar.
Quattro all-wheel drive and extremely sticky tyres can do odd things to handling performance. Both elements tax chassis rigidity and suspension components more than pure front- or rear-wheel drive. That new rear stabiliser bar should help with apex-to-clipping-point traction during full-throttle acceleration, using all the grip the Quattro system can provide.
But what about the adjustable coilovers? The truth is, the electronically adjustable dampers on most Audi performance cars don’t really do anything.
Suspension experts will tell you external rebound and compression adjustment using tools to make the clicks is what really works. And that’s the option Audi has now given RS3 Competition Limited owners: getting on the tools themselves and making suspension compression and rebound adjustments.
In South African conditions, adjustable coilovers have real advantages. Most high-performance cars are too stiffly sprung for South Africa’s coarse roads and have poor pothole strike absorption. That means terrible ride comfort, tortured low-profile tyres and damaged wheels.
With the adjustable dampers, owners can reduce the compression damping, improving ride comfort and bump absorption. But when they go on a road trip that includes some challenging mountain passes with good surface quality, or when they want to attend a track day, they can increase the compression damping to counter body roll, pitch and dive.
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The last ‘pure’ 5-cylinder Audi
In a world of silly vehicle apps and electronic in-car gimmicks, having adjustable coilovers and the tools to adjust them makes the RS3 Competition Limited even more of a driver’s car. This deepens the ownership experience and gives it an analogue edge in an era where drivers are seeking a more authentic driving experience and less electronic UX saturation.
Audi’s 2.5-litre, 5-cylinder engine is not Euro 7-compliant. That means the brand won’t be able to sell it beyond this year in the EU, which has traditionally been a huge market for RS performance cars, particularly RS3s. In any case, production of the 5-cylinder at Audi’s Hungarian engine plant is scheduled to end in 2027.
The RS3 Competition Limited might be the last pure 5-cylinder Audi performance car. Audi has shown where its powertrain development priorities lie, with the RS4 becoming the RS5, adding lots of heavy batteries for more power but also diluting the pure petrol-engined driving experience. For those who know why the brand’s 5-cylinder cars matter most, the RS3 Competition Limited is worth its hype … and potentially a future classic.