Audi A4 vs Audi A5: used car comparison
What’s the difference between the Audi A4 and Audi A5 and which is best for you? Our used car comparison guide tells you everything you need to know.
The Cazoo editorial team
Published on 20 March 2025 | 1 min read
Audi A4 vs Audi A5: Size and Styling
The A4 and A5 are exactly the same size and share many major components, including engines, suspension, and electronics. Each is approximately 4.7 metres long. Other cars of this size include the BMW 3 Series and the Ford Mondeo.
The Audi A4 is a traditional family car available in saloon or estate (known as ‘Avant’) bodies. There’s also an SUV-style version called the A4 Allroad, which features raised suspension and tough plastic body cladding. Conversely, the Audi A5 is sportier and available as a coupe or convertible. There’s also the A5 Sportback, a sleek five-door hatchback that offers additional practicality.
The A5 is slightly lower and wider than the A4, giving it a sportier look. Both models were updated in 2019 with new styling details, most notably larger front grilles and new headlight designs. If you prefer a more traditional look, the A4 may be the better option, whereas the A5 appeals to those seeking a sportier design.
Audi A4 vs Audi A5: Interior and Tech
The interiors of both the A4 and A5 are extremely user-friendly and beautifully made. While they aren’t quite luxury cars, the inside of either is a very relaxing place to spend long journeys. The A4 has bigger windows, allowing more light to enter, making the interior feel more spacious. The A5’s slightly darker interior is fitting for its sporty remit.
Both models share the same dashboard, complete with a long list of features as standard. Expect sat nav, a widescreen digital driver’s display, climate control, cruise control, and automatic emergency braking. The only noticeable difference is the ambiance created by the larger windows in the A4.
Switching between the two models is seamless as the layout of buttons, knobs, and dials are identical. You’ll find the same premium materials and build quality in both vehicles, ensuring a premium driving experience regardless of your choice.
Audi A4 vs Audi A5: Boot Space and Practicality
The A4 is designed with families in mind. It offers space for five adults to travel comfortably and has a boot capacity of 480 litres. The Avant and Allroad versions offer a bit more room with 495 litres of space.
The A5, while less practical, is still spacious enough for four adults. The coupe has a boot capacity of 450 litres, the convertible offers 380 litres, and the Sportback matches the A4 saloon’s 480 litres.
Both the A4 and A5 feature back seats that fold down in three parts, making it easy to load longer items like skis or curtain rails. This versatility adds to their appeal as practical yet stylish vehicles.
Audi A4 vs Audi A5: Which is the best to drive?
Given their similarities, the A4 and A5 offer almost identical driving experiences. Both models feature responsive steering, are easy to park, and excel at cruising long distances on motorways. However, if driving enjoyment on winding country roads is a priority, options like the BMW 3 Series may be more fun.
The A4 and A5 share the same petrol and diesel engines. Even the least powerful engines can provide rapid acceleration, but high-performance models like the S4 and S5 offer nearly 350bhp. For even more power, the RS4 Avant and RS5 boast almost 450bhp.
Automatic gearboxes are more popular in both models, with the latest versions being automatic-only. Audi’s Quattro four-wheel-drive system is available with more powerful engines, enhancing traction and performance.
Audi A4 vs Audi A5: Dimensions
Audi A4 Saloon
- Length: 4762mm
- Width: 2022mm (including door mirrors)
- Height: 1428mm
- Boot space: 480 litres
Audi A5 Coupe
- Length: 4697mm
- Width: 2029mm (including door mirrors)
- Height: 1371mm
- Boot space: 450 litres
Audi A4 vs Audi A5: Which costs less to own?
Fuel Economy
Both the A4 and A5 offer similar fuel economy. The latest A4 saloon and A5 coupe promise an average fuel economy of 40-45mpg with petrol engines and 48-58mpg with diesel engines. Other versions have slightly lower figures but remain competitive.
Insurance and Purchase Price
The A5, being sportier, costs a bit more to insure and purchase compared to the A4. However, the differences may be justified by the A5’s additional style and performance.
Maintenance Costs
Regular maintenance costs are comparable for both models. However, it’s always wise to consider factors like tyre wear and brake replacements, especially for high-performance versions.
Audi A4 vs Audi A5: Which is Safer?
Euro NCAP Ratings
Both the A4 and A5 received five-star ratings from Euro NCAP in 2015, indicating excellent crash protection. They also rank well for pedestrian safety.
Driver Assistance Features
Modern driver assistance features in both models include automatic emergency braking, cruise control with speed limiter, and hill-hold assist. These features contribute to a safer driving experience.
Build Quality
Audi’s reputation for building solid, reliable cars is evident in both the A4 and A5. The build quality ensures these vehicles remain safe and dependable choices in the used car market.
Audi A4 vs Audi A5: Verdict
Family or Sporty?
The A4 and A5 are essentially the same car with different bodies and purposes. If you’re looking for a large saloon, estate, coupe, convertible, or hatchback, both models are excellent choices. The A4 is the obvious choice for families due to its spaciousness and practicality, while the A5 caters to those who prefer a sportier look and feel.
Cost Considerations
The A4 generally costs less to buy, new or used, than the A5 Sportback. This cost difference might be the deciding factor for many buyers, making the A4 a more attractive option for budget-conscious individuals.
Final Thoughts
Ultimately, the best choice depends on your personal preferences and needs. If you value practicality and cost-effectiveness, the A4 is the way to go. If you’re drawn to sporty aesthetics and don’t mind paying a bit more, the A5 is an excellent choice.
Ready to make a decision? Explore our extensive range of used Audi A4 and used Audi A5 models at Cazoo and find the perfect car for you.