Audi A4

If your daily routine involves a long motorway stint an Audi A4 could be the perfect commuting companion.

Its class-leading refinement isolates you from the stresses of the daily grind. The beautifully made interior packed with technology ensures that you’ll stay relaxed behind the wheel, even on the longest of journeys.

It’s good to drive, with sure-footed handling, but the A4 is better suited to drivers who prioritise comfort over finely-balanced cornering. With space for four adults inside, it’s relatively practical, but family buyers will be far better with the estate version, which has a much bigger boot that is easier to load.

As with many of Audi’s other models, the A4 has a premium image, with a good blend of sporty styling cues and understated elegance that will have a broad appeal, but the absence of a hybrid or PHEV plug-in hybrid from the current range means it has higher running costs as a company car than several of its competitors.

For the vast majority of buyers, the front-wheel drive diesels will offer the best combination of performance and economy. They also make excellent motorway cruisers. All diesel A4s are badged as ‘TDI’ and (from the 2019 facelift onwards) come equipped with an 'S tronic' seven-speed automatic gearbox as standard. 

The entry-level Technik 30 TDI feels a little underpowered though, so if your budget can stretch up to the 35 TDI it’s a worthwhile upgrade since this engine has a far more relaxed character. It’s our pick of the current range.

For drivers covering lower annual mileages - or keen to avoid diesel entirely - the TFSI petrols provide an excellent alternative, with superlative refinement and smooth acceleration. The equivalent Technik 35 TFSI has more power than its diesel counterpart, plus thanks to its manual gearbox it's also the best value A4.

Choosing a favourite trim is easy since the A4 comes very generously equipped as standard. If you must have leather seats and beefier styling, upgrade to a Sport, but the Technik comes with everything you'll need.

The executive saloon class is an extremely competitive one, so there are plenty of high-quality alternatives. The BMW 3 Series matches the A4 for interior quality and refinement, but is more entertaining to drive on a winding road, while the Mercedes C-Class has more distinctive styling and a smoother automatic gearbox. 

Unlike the A4, both German rivals are available as plug-in hybrids, with very low CO2 emissions that make them a compelling choice for company car buyers. If reliability is a top priority, the Lexus IS is a touch more expensive, but has a well-earned reputation for its mechanical dependability. Price conscious? Go for the Skoda Superb, which is a lot more practical than the A4 and shares many of the same engines.

The Audi A4 boasts one of the highest quality cabins available at this price. The design might be a little more sober than what you'll find in the Mercedes C-Class or Jaguar XE, but the materials used in its construction, and overall level of fit and finish are a cut above these rivals. In fact, it feels like it belongs in the class above.

The plastics are dense and soft to the touch, the steering wheel and gear selector are wrapped in real leather, and cool aluminium greets your fingertips as you adjust the climate controls or brush the stylish dash inlays. Delightful.

Everything you'll touch regularly feels substantial and solid and no matter how hard you look, it's difficult to find any evidence of cost-cutting. Even the lids of the many dash cubbies close with a softly-damped action.

All these qualities give the driver the feeling of being cocooned inside, something that's enhanced on more expensive versions. The S line and Black Edition (as the name suggests) use darker materials for the roof lining, dashboard and doors, while adding metal pedals, a flat-bottomed steering wheel with perforated leather and LED ambient lighting that softly illuminates the cabin at night.

All A4s come equipped with an impressive array of on-board tech that puts navigation, infotainment and connectivity right at your fingertips. 

Like all the best new gadgets, Audi's Virtual Cockpit digital dials make life behind the wheel so convenient, it's hard to imagine what we ever did without them. They used to be a cost option on the A4, but from 2019 are included as standard on every model.

This bright, widescreen display is customisable and allows the driver to glance down at a real-time view of the current navigation, flick between DAB and your phone, all without taking your hands from the wheel. It closely mirrors many of the functions on the 10.1-inch touchscreen sitting atop the dash. Switching between the two soon feels intuitive. 

The pre-facelift A4 came with a 7-inch central display. While this was smaller and had fewer features, you could control it via a scroll wheel mounted on the transmission tunnel. This made it a lot simpler to use while driving than the newer touchscreen. You could argue the latest MMI has taken a step backwards. BMW's latest iDrive gives buyers the option to both touch and scroll - and is all the better for it. 

The good news is that the updated MMI comes fully loaded with everything you could ask for. The nav system has 3D mapping, DAB and Bluetooth as standard, along with an eight-speaker stereo. Plus all-round parking sensors ably assisted by a reversing camera. 

Better yet, Android Auto and Apple CarPlay connectivity are also included, so the huge central screen can become a giant smartphone. Apps like Spotify for music, Waze for traffic updates, or even Audible for audiobooks are just a button press away.

During the week, most saloon buyers are unlikely to need more than the two front seats and a place to stow their laptop bag or carpet sample, but when the weekend comes it's important to make the best use of the space that you have.

Fortunately, the A4 excels in this area, with a well-designed boot, and a roomier rear bench than many rivals. What does a well-designed boot look like? Well, the 480-litre luggage capacity only tells half the story. It also has a wide, square opening and rear seats that fold down in a 40/20/40 configuration. 

Combine this with a low load lip and relatively flat cargo floor, and it takes less effort to stow oddly shaped or heavier items.  

True, like all saloons the A4's load bay is shallower than in a hatchback, but unlike other stuff like the Jaguar XE and Alfa Romeo Giulia, the exterior design doesn't hamper functionality or prevent you from using every litre.

It's a similar story for rear-seat passengers. They get significantly more head- and legroom in the Audi than in either British or Italian alternatives. The narrow, raised middle seat is only really good for short trips, mind.

That additional cabin space comes in handy when fitting a rear-facing child seat, too, because it means the passenger in the front won't need to move their seat quite so far forward. The Isofix mounting points in the back are easily accessible, but the plastic covers are not attached to the seats, so they're likely to get lost.

Up front, there are plenty of small cubbies for stashing loose items, two large cupholders and door pockets deep enough to hold a large bottle of water each. The glovebox is merely average, but in the back you get a second set of large door bins and a pair of cupholders and a storage tray both hidden in the rear armrest.

There are a few things missing from the A4's practical armoury, however. Unlike newer models, it has no USB charging ports in the back (just a 12v socket). More irritatingly, there are no spring-loaded levers mounted in the boot for folding the rear seats down - you have to do this by reaching into the rear doors instead.

A few years ago Audi changed the naming convention for its engines. For fun, it would seem. So now the numbers on the badge are just a bit confusing. This can make navigating the A4's wide selection of engines way more difficult than it needs to be.

What you need to know is that all of the current range are turbocharged and most have a 2.0-litre capacity. As the Audi A4 is a favourite with big mileage drivers, diesels are a very popular choice. 

Every TDI comes with a seven-speed S tronic automatic gearbox, which is well suited to motorway driving. This gearbox does have an annoying habit of hesitating when you want to accelerate quickly and can also be a bit jerky at parking speeds. The automatic gearboxes in the C-Class and 3 Series are smoother and more responsive.

The most popular engine is the 35 TDI. With 163PS and 380Nm outputs it's plenty quick enough for most and feels noticeably less strained than the entry-level 136PS 30 TDI. If you want four-wheel drive grip, then 40 TDI comes with Audi's quattro all-wheel drive system as standard. Still, with only marginal performance gains and worse fuel economy, we don’t think it's worth the extra outlay.

The entry-level 35 TFSI petrol is the only new A4 available with a manual gearbox, which is precise and positive to use, but it does need to be given some extra encouragement to keep up with other traffic.

Older A4s were offered with a smaller 1.4-litre petrol that was less refined than the new 2.0-litre, but had the same 150PS power output, along with a pair of 3.0-litre V6 diesels that were smooth and strong performers.

The S4 uses a 3.0-litre V6 with an incredible 700Nm torque figure. That pulling power makes it almost as quick as the previous petrol S4, but with much better fuel economy.

Few cars in this class can isolate you from the world outside like the A4 can. Wind and road noise are barely audible inside the cabin, even at motorway cruising speeds. Sportier cars with larger wheel sizes generate a little more tyre roar than standard models, but engine noise and vibration is extremely well suppressed. 

That's true regardless of the engine you choose, but the 2.0-litre diesels are a little more vocal. Still, that difference becomes negligible once you've settled into a cruise. You won't hear more than a soft thud from the suspension either, even when driving over very patchy roads.

It's these qualities that make the A4 feel like a larger, more expensive saloon that's a pleasure to drive long distances. The exception is the entry-level manual 35 TFSI. Its 2.0-litre engine is smooth and unstressed, but you'll need to quickly shift down the gearbox often when you want a burst of speed.

Naturally, the more potent engines (in the 40 TDI and 40 TFSI) require fewer revs and feel more urgent when overtaking. This makes them more relaxing to drive, especially over long distances and fully loaded.

Audi was an early adopter of active safety technology, so it's no surprise that the A4 comes with a collision-avoidance system as standard. The brand's Pre-sense City technology works below 53mph and uses a camera to detect pedestrians or potential collisions. It will automatically brake to a standstill if necessary.

Another standard feature is high-beam assist, which will dip the main beams for you to prevent the car from dazzling other drivers - certainly helpful in a car with such bright LED headlights. Acoustic all-round parking sensors and a reversing camera (with guidelines on screen) should help you manoeuvre into tighter spots. 

Hill hold assist (which prevents you from rolling back down a steep gradient) is standard and activated at the push of a button, plus cruise control with a speed limiter is also included. This can be upgraded to a radar-guided system with Stop&Go function. 

Like any modern car, the Audi comes with a set of six airbags, electronic stability control, and traction control.  It was crash tested after it was first launched in 2015, gaining the maximum five-star rating. Some of its rivals did score higher for adult occupant crash protection, but none were safer for child occupants in an accident.

Some pre-facelift A4s came with a space-saver spare wheel fitted underneath the boot floor, but on newer A4s this handy extra is no longer offered (even as an option) with a foam tyre repair kit the only substitute

The Audi A4 is a relatively expensive car thanks to its upmarket image, which means you'll pay a higher insurance premium than for an equivalent mainstream saloon like the Volkswagen Passat or Skoda Superb. 

The cheapest models are the SE trim with both entry-level petrol and diesels in Group 19. A 35 TDI in S line specification is Group 25, while the four-wheel drive 40 TDI quattro is Group 30, so bear this in mind when factoring the increased running costs of having an A4 with extra all-weather capabilities.

This stacks up favourably with Audi's nearest class rivals, with the cheapest models sitting three (or in the case of the BMW 3 Series six) groups lower - which could make a big difference to a young professional.

If the original buyer managed to spend more than £40k (which is about two thirds of the range) on their A4, then it will be liable for the showroom tax, from years two to six of ownership. All models registered from April 2017 onwards will pay the standard flat annual VED rate.

For A4s registered before April 2017, you'll pay a lower rate based on NEDC emissions and no additional showroom tax. For example, a 2.0 TDI Ultra S tronic in Sport trim registered in 2016 will only cost £20 in VED.

A4s are popular with company car drivers, but without an ultra-low CO2 PHEV hybrid model in the range, the most affordable petrol and diesel models (in Technik trim) start at a 33% BIK, while mid-range cars are 35%.

As we have alluded to, the latest A4 will not leave you wanting for equipment. Every model comes with a range of toys so that even the most affordable Technik versions feel luxurious and well-appointed inside.

Standard kit includes keyless start, climate control, heated front seats, cruise control, all-round parking sensors, a reversing camera, and the impressive MMI Plus infotainment system and slick Virtual Cockpit.

These cars look a little drab on the outside, since they come on 17-inch alloy wheels and have a less flashy grille design than the sportier versions, but do have LED headlights. Upgrading to the Sport line adds chrome to the grille and air intakes, 18-inch wheels and on the inside, chunky sports seats trimmed in leather.

Choosing an S line or Black Edition adds a good dollop of visual flair but adds nothing useful to the spec list. However, the Comfort & Sound pack (£1395) with its excellent upgraded stereo, electric boot opener and multi-coloured interior LEDs is worth looking for on used cars. 

If you spend a lot of time on the motorway then the Driver Assistance Tour Pack (£1250) will ease the burden of a long commute, with its adaptive radar cruise control and lane-keep assist technology. Both come as standard on the top-spec Vorsprung models.