BMW i Series vs Audi S5
What's the difference?

BMW i Series

$88,900 - $233,400

2026 price

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Audi S5

$97,880 - $140,990

2025 price

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Aston Martin Vanquish

Lamborghini Aventador

Mercedes-Benz A-Class

Mercedes-Benz A35

Mercedes-Benz A45

Mercedes-Benz AMG GT

Mercedes-Benz C-Class

Mercedes-Benz C43

Mercedes-Benz C63

Mercedes-Benz CLA-Class

Mercedes-Benz CLS-Class

Mercedes-Benz E-Class

Mercedes-Benz E53

Mercedes-Benz EQ-Class

Mercedes-Benz EQS

Mercedes-Benz S-Class

Summary

2026 BMW i Series

2025 Audi S5

By Andrew Chesterton

By Chris Thompson

Safety Rating

Electric motor type

Electromagnetically Excited

Turbo 4, 2.0L

Vehicle type

Battery Electric

Premium Unleaded/Electric

Electric range

805 km

6.9L/100km (combined)

Energy consumption

18.8 kWh/100km

Battery capacity

108.70 kWh

Seating

Likes

Ridiculous range in its most efficient settings
Properly fun in its sportiest settings
Tech that feels futuristic but somehow familiar

Stacked with techy features
Edition One value is hard to deny
Still a delight to drive

Dislikes

Light-touch steering takes some getting used to
Feels heavy on some roads
The native operating system can be clunky and confusing

Loses some interior simplicity
Edition One not a permanent fixture
Having to wait for more variants

2026 BMW i Series Summary

There are a lot of big numbers surrounding the BMW iX3, the German brand’s new-from-the-ground-up EV that acts as the flagbearer for its future-facing Neue Klasse (or New Class) architecture, designed to distil all the ingredients that make a BMW a BMW, and then electrify for them for the post-ICE (internal combustion engine) era.

But the one that really stood out? 805. That’s how many kilometres of driving range the iX3 will deliver, though admittedly in its most efficient and least exciting driving modes. That is bonkers, right?

It’s worth pointing out the first BMW i3, which only launched a decade-or-so ago, delivered more like 150km on what would have been the WLTP cycle, if it had existed then. Talk about leaps and bounds.

A good start for the newest BMW EV, then. But what else does the iX3 have to offer?

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2025 Audi S5 Summary

The Audi A5 has done something naughty. It’s replaced the Audi A4.

Or at least that’s the case for now after the Ingolstadt brand made a bit of a mess of its naming strategy.

Essentially, the Audi A5 is now available as a sedan or a wagon, and the next A4 coming soon will be electric. The previous A5 was a swoopier two-door coupe or four-door gran coupe style model. So the A5 is now effectively Audi’s main BMW 3 Series or Mercedes C-Class and CLA rival.

Plus, the Audi S5 is also here to cater to performance car fans.

Can a new platform, a sleek, fresh look and a techy interior do the job?

We’ve been pedalling around the Victorian countryside in the hopes of finding out.

Stick with me, and I reckon we’ll get to the bottom of it. The question about the car, that is, not the bottom of Victoria.

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Deep dive comparison

2026 BMW i Series 2025 Audi S5

Verdict

The thing that really grabs you from behind the wheel of a car like this is just how far EVs have come. The fact you can get a ridiculous range and have a really, really good time on the right twisting road is a pretty good deal and solidifies the fact EVs like this one are the future.

Note: CarsGuide attended this event as a guest of the manufacturer, with travel, accommodation and meals provided.

Note: The author, Andrew Chesterton, is a co-owner of Smart As Media, a content agency and media distribution service with a number of automotive brands among its clients. When producing content for CarsGuide, he does so in accordance with the CarsGuide Editorial Guidelines and Code of Ethics, and the views and opinions expressed in this article are solely those of the author.

Verdict

The Audi A5 remains a convincing option in the premium mid-size sedan category, even with the near-$10K price increase over its equivalent grade A4 predecessor.

Even in its base spec, it’s a lovely thing to drive and adds enough new kit to be a reasonable option when it comes to value. In terms of tech usability, it stands out from rivals. Practicality is still king for Audi.

But for the heart-over-head types, the S5 is fast and fun while remaining a comfortable cruiser and the price is decent. On a personal note, a six-cylinder wagon? That's a big yes from me.

For the time it’s available, it’s hard to go past the value on offer in the S5 Edition One. Getting an AWD V6 with that kind of capability for under $100K is something that's sure to tempt buyers. If it doesn’t, we need to take a good look at ourselves.

Note: CarsGuide attended this event as a guest of the manufacturer, with meals provided.

BMW i Series vs Audi S5 What's the difference?

Summary

Deep dive comparison

Verdict

Verdict

BMW i Series vs Audi S5
What's the difference?