BMW 1 Series vs Audi A3: Which used hatchback should you buy?

Both cars are similarly proportioned and offer strong levels of equipment, but they do not feel the same to own or drive. The Audi A3 arguably helped create this class of car around 30 years ago, while the younger BMW 1 Series has shown that a premium small hatchback can still be fun to drive since its introduction in 2004. So, which one is right for you? Here we look at the key differences between the BMW 1 Series and Audi A3, including design, interior quality, technology, driving experience, running costs and everyday practicality.

BMW 1 Series vs Audi A3 at a glance

Design and styling

Both cars have strong premium appeal thanks to their upmarket badges and modern styling, but they express their characters in different ways.

The BMW 1 Series has the bolder stance. It’s arguably the more design-led of the two, with chunky proportions and, in desirable M Sport trim, a more aggressive look. It’s the car more likely to stand out in a supermarket car park, particularly in sportier colours or with larger alloy wheels.

The Audi A3 is the more traditional-looking choice. Where the 1 Series is chunky and curvy, the A3 is crisply designed, more upright and more mature in its overall look. Entry-level Sport models can appear quite restrained, while S line versions bring a sharper, more head-turning finish.

Choosing between them on design will come down to taste. The 1 Series has more attitude, while the A3 feels more sophisticated and understated.

Interior quality and comfort

Step inside and you’ll see why both cars sit above mainstream hatchbacks such as the Ford Focus and Vauxhall Astra. They feel more premium, more carefully finished and more focused on the driver.

The Audi A3’s interior is one of the strongest in this class for quality and technology. It has a fairly restrained look, but the materials feel good and the switchgear has the precision you expect from Audi. The dashboard is also driver-focused, with the main controls angled towards the person behind the wheel.

The BMW 1 Series has a driver-focused cabin too, with a dashboard that wraps slightly around the driver’s position. It feels modern and less austere than the Audi, while still having the familiar German quality buyers expect. Build quality is very good, although the A3 still edges it for outright solidity and plushness.

The BMW fights back with a strong driving position. Its chunkier steering wheel and highly adjustable driver’s seat make it easy to get comfortable, especially if you enjoy a more involved drive.

For rear passengers, the Audi A3 has the advantage. It offers more generous headroom, which helps if you regularly carry taller adults in the back. Boot space is another clear Audi win, with 380 litres compared with the BMW’s 300-litre capacity.

Technology and infotainment

There’s very little to separate the BMW 1 Series and Audi A3 for technology. Both offer the kind of digital displays, smartphone connectivity and infotainment quality you’d expect from premium compact hatchbacks.

The Audi A3 has a clean, modern set-up with a 10.1-inch touchscreen and digital dials on all models, regardless of trim. The infotainment system is easy to use, with logical menus and clear icons. Satellite navigation is standard, and Apple CarPlay and Android Auto help make everyday journeys easier.

BMW’s iDrive system is also one of the best in the business. It’s easy to use on the move, and some versions of the 1 Series include a rotary controller on the centre console. Later models are more touchscreen-focused. Either way, the screen is crisp and the digital dials are clear.

In short, both cars feel up to date. The Audi’s system is neat and intuitive, while the BMW’s layout has a slightly more driver-led feel.

Driving experience

It’s from behind the wheel where the two cars really differ.

The BMW 1 Series is the sportier car to drive. It feels sharper and more engaging, with direct steering and a more responsive chassis. The move to a more conventional front-wheel drive layout in recent years has softened some of the older model’s driver appeal, but the 1 Series remains one of the more enjoyable cars in this class.

There is a trade-off. The BMW has a firmer ride than the Audi A3, especially in M Sport trim, where the suspension is tuned for a more focused feel. That can make it rewarding on a country road, but less settled over rougher surfaces.

The Audi A3 is the more relaxed choice. It rides more comfortably, feels quieter at speed and stays composed whether you’re in town, on the motorway or on a twisting road. It’s not dull, though. The light steering and slick manual gearbox, where fitted, still feel precise and well engineered.

If you want the car that feels more involving, choose the BMW. If you want something smoother, calmer and easier to live with every day, the Audi has the edge.

Running costs and efficiency

Both cars are available in high-performance versions. For the BMW 1 Series, that includes models such as the 128ti and M135i. For the Audi A3, it includes the S3 and RS3. These are quick, exciting cars, but they are aimed more at enthusiasts. Most used buyers will be looking at the more common petrol, diesel and hybrid versions.

The BMW 1 Series range includes a 1.5-litre three-cylinder petrol engine and diesel options including 1.5-litre and 2.0-litre units, depending on model year. The 134bhp petrol is a strong everyday choice and can return fuel economy in the high-40s mpg. The smaller diesel is the efficiency highlight, with around 60mpg possible in mixed use.

The Audi A3 has a broader spread of engines. The entry-level 1.0-litre three-cylinder petrol is punchy enough for everyday driving, while many buyers choose the 1.5-litre four-cylinder petrol engine because it balances performance and efficiency well. With 148bhp, it still has enough power for longer journeys and can return fuel economy in the mid-40s mpg.

Diesel A3 models are more frugal again, with around 55mpg possible in mixed use. The A3 also pulls ahead if you want plug-in hybrid power, as some versions can offer up to 88 miles of pure-electric running. To get the best running costs from any plug-in hybrid, you’ll need regular access to charging.

Practicality and everyday use

Both cars work well as daily drivers, but the Audi A3 is the more practical of the two. Its 380-litre boot is usefully larger than the BMW’s 300-litre space, and the extra rear headroom makes it better suited to carrying taller passengers.

The BMW 1 Series is still easy to live with. It’s compact enough for town use, comfortable enough for longer journeys and has enough space for most couples, commuters and smaller families. The difference is that the Audi feels a little more flexible if you regularly carry passengers or luggage.

For urban driving and shorter trips, either car makes sense. For longer motorway journeys or regular family use, the A3’s extra space and calmer character give it a clear advantage.

BMW 1 Series or Audi A3, which is best?

Choosing between the BMW 1 Series and Audi A3 comes down to what you want from a premium hatchback.

The BMW 1 Series is the better fit if you want a compact luxury car with a sportier edge. It has the technology, quality and upmarket kerb appeal you expect, but adds a sharper and more engaging driving experience. It also has a bold design, especially in M Sport trim.

The Audi A3 is the more traditional all-rounder. It’s refined, comfortable, relaxing to drive and has a high-quality finish inside. It’s also one of the roomier compact premium hatchbacks, which makes it easier to recommend if you carry passengers or need more boot space.

In truth, both cars are excellent. Choose the BMW 1 Series if driving enjoyment matters most. Choose the Audi A3 if comfort, space and refinement are higher on your list.

Find your next BMW 1 Series or Audi A3 with AA Cars

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• Browse used BMW 1 Series cars
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