Audi RS4 Pulls A McLaren As Dyno Test Reveals More Power Than Advertised

Nowadays, you don’t need to look too far in order to find a high-performance super wagon. In fact, Audi alone will sell you not one, but two: the RS4 and RS6.

The former is powered by a 2.9-liter twin turbo V6 producing 450 PS (444 HP) and 600 Nm (443 lb-ft) of torque. Audi claims a 0-100 km/h (62 mph) acceleration time of 4.1 seconds and a top speed of 280 km/h (174 mph), if you tick the right boxes that lift the 250 km/h (155 mph) electronic limiter.

Those are some pretty impressive numbers, especially the 0-100 km/h (0-62 mph) time. It’s more than half a second quicker than the previous iteration, and nearly a full second faster than the naturally aspirated model from two generations ago.

You could argue that, compared to its direct predecessor, the 2018 RS4 is faster simply because it’s lighter by 80 kg (176 lbs) and it shifts faster, and while that may be true, there might also be a little more to the story.

This particular RS4 is currently undergoing a long-term test for Carwow, and since the journos were amazed by its performance, they decided to run a dyno test.

What they discovered is that it actually puts out more power than advertised.

First, it dropped 456.2 HP (462.5 PS), followed by an even more impressive 460.2 HP (466.5 PS) in the second run. That’s a big difference compared to Audi’s official blurb, which claims a max output of 444 HP (450 PS).

Now, there’s no cheating on Audi’s part; power outputs on specific cars can vary a bit from the official numbers a bit, and a 4 percent difference is nothing special. Plus, it means that this particular RS4 is a smidge more powerful than advertised. Surely no one could complain about that, right?

  • Autoexperte

    for car experts: Audi has copied the engine configuration from the Alfa Romeo Giulia Quadrifoglio Verde (QV)

    • wintergraan

      Please explain, danke 😉

      • Autoexperte

        look at the engine data of the Giulia QV and the RS4

        • wintergraan

          But how does that explain that Audi copied Alfa’s engine configuration?

          • Autoexperte

            Alfa Romeo has the ideas and was the first

          • Rafael

            It’s a Ferrari engine, dumbass

  • Bo Hanan

    Thanks for lying about the power Audi!

    • Daniela Wolf


      • Bo Hanan

        I am not accustomed to having my comments questioned by females. (Smile)

        • Daniela Wolf

          Feminists will accuse u of rape. #MeToo ^^

          • Bo Hanan

            Love it!

    • Rafael

      Big thanks! Tax in Germany is through power, so german carmakers are more frequently advertising lowest possible power at the wheels. considering this is an all wheel drive car, in the best case scenario this car is making about 520hp at the crank! (worst case is about 480/90). so yeah, pretty underestimated

  • steve

    Maybe the dyno is reading optimistically high!

  • Vassilis

    I think powerful VAG engines traditionally make more horsepower than they claim.

  • Autoexperte

    OG, do us a favour and get out of here

    • wintergraan

      Na, na. Wer austeilt und mit fragwürdigen Infos um sich wirft, muss auch einstecken können 😉

      • Autoexperte

        Can you please write in English?

  • eb110americana

    I don’t know how Limey dynos compare to Mustang or DynoJets, but when you measure at the wheels, there is a percentage loss to friction (unless these are somehow pre-corrected numbers). If you assume that the Audi’s DSG is super efficient at only 10% loss–which is ridiculous in an AWD car–that means 460.2 HP = 511 HP at the crank, or 67 over the official numbers. With a still low 15% loss, that becomes a whopping 541 HP! Almost 100 more than the official rating! That is quite the underrated power output!

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