In this review we test the Audi A4 vs BMW 3 Series
In this review we test the Audi A4 vs BMW 3 Series

Audi A4 vs BMW 3 Series: Which is better?

Thinking of buying a new mid size executive saloon in Ireland in 2022? In this Audi A4 vs BMW 3 Series comparison review, we are going to take a closer look at two titans of the executive car park – the Audi A4 and the BMW 3 Series. In 2019, BMW released an all new generation of the 3 Series, while in late 2019, a revised Audi A4 range hit dealer showrooms in Ireland.

The G20 BMW 3 Series sports a gentle evolution in styling of a very familiar silhouette. It’s the classic German 3-box saloon. Proportions have been revised, styling modernised more in line with the 5 Series from a class above. But the hallmarks of the 3 Series remain – the strong BMW kidney grille at the front and a road hugging sporty stance teasing the class-leading handling ability the BMW 3 Series will always be inextricably linked to.

In the Audi corner, the A4 does a fine job of commanding the executive car park. Timeless design, clean lines and elegant detailing are what make buyers fall in love with the Audi A4 quicker than you can say ‘Vorsprung durch Technik’. The 2019 facelift enhanced what was already a smart, contemporary design of a premium saloon car.

The interior of the latest 2020 Audi A4
The interior of the latest 2020 Audi A4

LED headlights are standard on both the A4 and the 3 Series ranges. Trim levels give a classic look or a sporty one in both the 3 Series and A4 ranges. This reviewer prefers the sporty look bestowed by BMW’s M Sport trim or Audi’s S line. Larger alloy wheels, meaner body kits and other exotic details make these models a little bit special (and more expensive).

So which car has the best interior?

The latest generation BMW 3 Series has a new interior that has been delightfully modernised with the latest technology features and infotainment. The material quality is excellent with beautiful leather upholstery available as standard on higher spec M Sport models. We loved the sporty M Sport steering wheel and new digital instrument panel, the latter which comes as standard across the range. SE and Sport models get a new 8.8-inch touchscreen infotainment system, while M Sport gets the larger 10.25-inch with Apple CarPlay and Android Auto connectivity, gesture and voice control. You can also control using the iDrive controller on the centre console.

In the cabin of the Audi A4, you can have a similar digital and techy experience. The cabin design is even better in the Audi A4. Though this car debuted in 2015, it still looks really elegant and contemporary inside. The 2019 update has made the A4 even better again with the latest 10.1-inch high resolution MMI touch display tilted slightly towards the driver. This set up comes as standard and keeps the Audi A4 at the races. A digital instrument panel is an extra however.

The 2020 Audi A4 S line
The 2020 Audi A4 S line

How practical are they?

The 3 Series has a longer wheelbase than the car it replaces and cabin comfort has been improved for passengers. There is still quite an intrusive transmission tunnel in the middle but overall there is more shoulder room in the front and extra legroom in the back. BMW has also increased the height of the door opening so getting in and out of the car is easier for rear passengers. There is not much between these two cars in that they will fit four adults comfortably. The boot volume is the same in both the A4 and the 3 Series – 480 litres. Both cars are available as more practical estate cars – the Audi A4 Avant and BMW 3 Series Touring.

Engine options

In Ireland the new BMW 3 Series is sold with petrol and diesel engines, and there is also a new BMW 330e plug-in hybrid. On the petrol side there is a 2.0-litre petrol badged 318i, 320i or 330i depending on horsepower; there are also 2.0-litre and 3.0-litre diesels (badged 318d, 320d, 330d). There’s also a top end 340i and 340d models, which also feature BMW ‘xdrive’ four wheel drive. My pick is the popular BMW 320d with 2.0-litre diesel engine and 190 hp for a mixture of power, refinement and economy. 8-speed automatics and 6-speed manual gearboxes are available. However the 330e hybrid is another good choice in the range.

The interior of the 2020 BMW 3 Series
The interior of the 2020 BMW 3 Series

The Audi A4 is also available with a range of petrol and diesel engines, however at this time there is no A4 plug-in hybrid to match the popular BMW 330e. Power comes from a 2.0-litre petrol engine with 150 or 190 hp, or a 2.0-litre diesel with 136, 163 or 190 hp. A 6-speed manual gearbox or S tronic automatic are also available. Audi’s quattro four wheel drive is available on the 2.0-litre 190hp diesel. The 2.0-litre diesel with 163hp is a popular choice in this large executive car segment and very economical.

Why not try these for a test drive?

Audi A4 35 TDI 163hp S tronic S Line. Fuel consumption quoted at 5.4-5.7 litres/100km.

BMW 320d 190hp M Sport. Fuel consumption quoted at 4.4-4.7 litres/100km.

Driving them

On the road both the Audi A4 and the BMW 3 Series offer premium levels of comfort and refinement. They slice through the air seamlessly and silently. The Audi A4 seems just that little better in this regard with refinement and comfort being key pillars of this model. But that’s not to say that the BMW 3 Series is bad in this particular area. However the BMW 3 Series is a lot more fun and engaging to drive than the Audi A4, even as a basic four pot diesel. The steering is sporty and tactile, the grip and poise sensational. It’s the one that never ceases to entertain.

We'll always love a drive in the BMW 3 Series
We’ll always love a drive in the BMW 3 Series


For the most up to date pricing for the Irish market, please check the manufacturer’s website!

The BMW 3 Series comes in three trims SE, Sport and M Sport. The entry level SE model has 17″ alloys, LED headlights, BMW Light Carpet, interior ambient lighting, reversing camera, electric folding rear view mirrors, three-zone air conditioning and enhanced acoustic glazing. There’s also a leather sport steering wheel and BMW Live Cockpit plus, with 8.8-inch central instrument cluster.

The Audi A4 comes in SE or S Line trim. Standard equipment includes heated, electrically adjustable front seats, tri zone climate control, the 10.1-inch colour display, smartphone interface, 18“ alloys, LED headlights and rear lamps, rear view camera, Audi Drive Select, keyless go, front and rear parking sensors, and cruise control.

The Audi A4 shines for its refinement and elegance
The Audi A4 shines for its refinement and elegance

So which are you buying?

This is a very tough call. When you are buying a car at this level of the market, a few things are guaranteed: prestige, refinement, comfort and quality. The Audi A4 and the BMW 3 Series deliver on these fronts. Under the skin, the BMW is the newer car here, however the Audi A4 2019 facelift means that you would be hard pressed to know it. The Audi A4 steals the show in terms of interior design and technology. It just is a nicer cabin to spend time in. However, beside the BMW 3 Series, the Audi A4 is fine but dull to drive. The 3 Series is really good to drive, engaging, athletic and supple. The Audi A4 is a classy, plush ride. So which will it be?

In light of our summation above, you won’t regret buying either car. But for this reviewer who loves driving, my money would be on the BMW 3 Series.

Caroline Kidd