Audi S4 vs BMW I4

What's the difference?

VS
Audi S4
Audi S4

2021 price

BMW I4
BMW I4

$88,900 - $133,900

2026 price

Summary

2021 Audi S4
2026 BMW I4
Safety Rating

Engine Type
Turbo V6, 3.0L

Not Applicable, 0.0L
Fuel Type
Premium Unleaded Petrol

Electric
Fuel Efficiency
8.6L/100km (combined)

0.0L/100km (combined)
Seating
5

5
Dislikes
  • Still no wireless CarPlay
  • Three-year warranty lags behind cheaper brands

  • Mediocre range
  • Combustion platform limits practicality
  • New i3 is more advanced
2021 Audi S4 Summary

Audi would probably prefer you not to realise this, but the five distinct versions of S4 and S5 on the market all pertain to a single performance and equipment formula spread across five different bodystyles. 

Yes five, and this has been the case for more than a decade, with the S4 sedan and Avant wagon, A5 two-door Coupe, convertible Cabriolet and five door liftback Sportback all representing vastly different shapes for you to choose from, with the same underpinnings. This simply echoes the A4 and A5 ranges they’re based on of course, and BMW clearly thought it was a good idea too, given the 3 and 4 Series ranges were split into individual lines at the start of last generation.

Mercedes-Benz offers a similar array, minus the liftback, but is happy to wrap the whole lot under the C-Class label. 

So, given that the A4 and A5 range scored a mid-life update a few months ago, it’s only logical that the changes flow on to the performance S4 and S5s, with the top-tier RS4 Avant following suit. 

We’ve covered the latter in October, and now it’s the turn for the former, and CarsGuide was among the first to drive the updated S4 and S5 ranges at their Australian media launch last week.

View full pricing & specs
2026 BMW I4 Summary

BMW has been incredibly smart with its electric vehicle (EV) offerings in Australia to date.

Ever since the Fringe Benefits Tax (FBT) exemption was introduced for novated lease buyers of EVs under the Luxury Car Tax (LCT) threshold, the German brand strategically introduced versions of its EVs that qualify.

The BMW i4 eDrive35 electric liftback, which is based on the locally defunct 4 Series Gran Coupe, is one of these cars.

It recently received a mid-life update that brought more range and features, while remaining under the LCT threshold for fuel-efficient vehicles.

However, the plot thickens. BMW is soon set to launch its new i3 electric sedan which is based on the company’s Neue Klasse dedicated electric architecture.

BMW hasn’t given the i4 an official production end date, however overseas reports indicate it’ll end as soon as next year to make way for the new i3.

Should you hold out for this new-generation car, or does the i4 still hold up? Read on to find out.

View full pricing & specs

Deep dive comparison

2021 Audi S4 2026 BMW I4

Change vehicle