Is the new Audi A5 better than a BMW 3 Series or Mercedes C-Class?

This is the new Audi A5, which is technically a replacement for the Audi A4. Before things get too nerdy and confusing, all you really need to know is that the Audi A5 is an alternative to the BMW 3 Series and Mercedes C-Class, making up a trio of posh saloons that have long proved popular with those who need to do big miles in comfort.

But how does the new one compare? We’ve brought all three together to test everything from interior space and quality, to what they’re like to drive.

How does it look?

Audi has taken the ‘if it ain’t broke’ approach with the A5’s design. It’s sleek, sophisticated, and very much an Audi. The big grille, flush door handles, and full-width OLED light bar at the back give it a techy, futuristic edge, but it’s not exactly a head-turner. Think “well-tailored business suit” rather than “runway fashion statement.”

What’s it like inside?

The A5 feels properly premium in the cabin. Build quality is impeccable, and the materials are posh. However, Audi has gone screen-mad. There’s a giant touchscreen, a digital driver display, a head-up display and, if you spec it, a third screen for the passenger. It’s all very sci-fi, but also a bit much – especially when the climate controls are buried in the touchscreen.

The BMW 3 Series has a sportier, driver-focused cabin, while the Mercedes C-Class goes full luxury lounge. The A5 sits somewhere in between – smart and solid, but not particularly exciting.

Is it practical?

Space in the cabin is decent. There’s plenty of room for arms and legs, but if you’re over six feet, your head might brush the roof in the back. Storage is good, but the boot is smaller than alternatives – at 445 litres (or 417 litres with all-wheel drive), it loses out to both the C-Class and 3 Series. If practicality is a priority, the Skoda Superb starts to look tempting.

What’s the engine line-up?

Unlike its plug-in-hybrid rivals, the A5 sticks with petrol and diesel engines, though they do get mild-hybrid assistance. That means you can creep around silently in stop-start traffic, but don’t expect any real electric-only range.

The 150hp petrol is the sensible pick, the 204hp petrol is a bit punchier, and the diesel is great for motorway mile munchers. No full hybrid or electric options make it less appealing for company car buyers, though; both the BMW 3 Series and Mercedes C-Class have tax-friendly plug-in hybrid options.

What’s it like to drive?

The A5 is a lovely motorway cruiser – quiet, refined, and comfortable. Around town, the light steering makes it easy to manoeuvre, but the gearbox can be a bit hesitant. On a twisty road, it’s safe and stable, but not exactly thrilling. The BMW 3 Series is more fun to drive, while the C-Class leans into comfort. The A5? It’s somewhere in the middle.

What’s the verdict?

The Audi A5 is an effortlessly competent executive saloon. It’s quiet, comfortable, well-built, and packed with tech. The BMW 3 Series is the better all-rounder, because it has a nice cabin and it’s great to drive, but the A5 is still an excellent option if you’re not worried about owning a car that’s fun on a twisty road.