Audi S4 vs Subaru Solterra

What's the difference?

The S4 and S5 range continues to represent a great formula for performance you can live with every day. They're arguably the sweetest balance Audi produces, actually. All come fantastically equipped, with cabins that feel truly special, and we’re lucky they can be had in a choice of five bodystyles.  

The updated Subaru Solterra is now good enough to compete with rivals such as the Tesla Model Y and Zeekr 7X. The price is right as are the driving range and motor outputs.

There's room for improvement in terms of cabin packaging. The car doesn’t cater for taller, larger people up front, with the steering wheel placement and wide centre console. Cabin storage could also be much better.

Still, the Solterra is superb to drive. One of the best EVs I’ve piloted at this price.

The S4 sedan and Avant have scored the bulk of design updates, with all new and recontoured side panels including the sedan’s C-pillar matching what was applied to the A4 earlier this year. 

This is paired with new front and rear facias and lighting for a subtle but extensive rework of the fifth-generation S4’s conservative look. 

The S5 Sportback, Coupe and Cabriolet get S5-specific new lighting and facias, but no sheetmetal changes. As before, the Coupe and Cabriolet ride on a 60mm shorter wheelbase than the Sportback, sedan and Avant.

The S5s also get Matrix LED headlights as standard which do a neat animated sequence when you unlock the car. 

Other visual hallmarks include new S4-specific 19-inch wheels, with S5 stepping up to its own unique 20-inch wheel. The six-piston front brake calipers are appropriately painted red, and there’s S-specific adaptive dampers under there too. All variants aside from the Cabriolet get a lip spoiler on the rear.

On the inside, there’s a new centre console and bigger 10.1-inch multimedia screen, while the Audi Virtual Cockpit driver instrument display now offers a hockey stick-style rev counter in additional to traditional dial layouts.

The Solterra is a mid-sized SUV with sporty coupe-like styling and this update has seen the front of the car receive a new look which to my eyes is better than the previous face. 

The rest of the car’s exterior remains mainly unchanged in the design.

If you aren’t a fan of the Solterra’s look then check out Toyota’s bZ4X, which is its twin and has slightly more conservative styling, and while I do like the Subaru’s face, I think Toyota’s tail-light treatment is cleaner.

The cabin is modern with a large central media screen, a high-placed instrument display and a wide centre console with dual phone chargers. But the squareish steering wheel steals the show, completing the futuristic vibe.

This update has seen the centre console re-designed with the dual chargers added and the gear-shifter moved backwards away from the media display.

The cabin doesn’t have much in the way of glitzy touches, with dark materials dominating throughout. Hard plastics abound, but the interior still looks and feels premium.

The biggest practicality change among the five S4 and S5 variants is their upgrade to the latest version of Audi’s MMI multimedia system, which steps up to a 10.1-inch touchscreen and drops the scroll wheel from the centre console.

It also boasts ten times the computing power of the version it replaces and uses this and an on-board sim card to access Google Earth maps for navigation and Audi Connect Plus that offers driver information such as fuel prices and parking information as well as point of interest search and weather information, plus the ability to make emergency calls and seek roadside assistance.

There’s also a wireless phone charger, but using Apple CarPlay will still require a cord as per Android Auto.

I only drove the S4 Avant and S5 Sportback at their media launch, which are clearly the most practical of the five, but from our experience with the previous versions, each looks after its occupants well in terms of space and storage. Back seat accommodation is clearly not a priority in the Coupe and Cabriolet, but there’s three other variants if that’s what you’re looking for. 

The Cabriolet can open its automatic folding soft top within 15 seconds, at speeds of up to 50 km/h.

The steering wheel’s square design is like that for a reason - it’s designed to provide the driver with a clearer view of the instrument cluster. But as noted in the past with other vehicles that choose this set up, the ergonomics don’t work for everybody - especially if you’re tall like me (I’m 189cm).

In my case the top of the steering wheel obstructs my visibility of the display, which shows vehicle speed among other crucial info. 

There’s also a problem with the clearance of the steering wheel and my legs. This is caused by a combination of my height, the low steering wheel and the limitations of how much it can be raised, the low-hip point in the seating position and the shape of the wheel. 

Add an overly wide centre console and space for larger and taller drives becomes even more cramped.

Moving the shifter back in this update also makes it more difficult to use for me and the mechanism is quite clunky.

Second row space is a much better story, with a flat floor, good headroom and lots of legroom even for me behind my driving position. The rear door aperture isn’t great and this has made installing child car seats and the corresponding child difficult.

Cabin storage could also be better. There’s no glove box, but there is space under the centre console, although this is now where the large driver’s manual lives. There’s a large centre console bin, big door pockets and four cupholders (two up front and two in the second row).

The second row has directional air vents and USB ports. There are USB ports up front, too.

Boot capacity isn't enormous at 421 litres in the entry-grade and 410 litres in the Touring. There’s no front boot, either. Under the bonnet is the Solterra’s front motor and electrical hardware.    

The Solterra is a five seater SUV, so no third row here.

The updated Solterra is offered in two grades. An entry-grade model, simply called Solterra, lists for $63,990 and above that is the Solterra Touring for $69,990. That’s up to seven thousand dollars more affordable than pre-update.

We tested the top-of-the-range Touring, which comes loaded with standard features, the only option being leather seats.

If you were wondering if you needed to spend the extra money on the Touring you might be pleased to know both grades have exactly the same powertrain and the entry-grade comes with plenty of standard features.

Coming standard on the entry grade Solterra are 18-inch alloy wheels, LED headlights and LED tail-lights, power mirrors, puddle lamps, a powered tailgate with kick-sensor (new with the update) and roof rails. 

There’s also synthetic leather seat trim, heated and eight-way power-adjustable front seats, a heated leather steering wheel, heated second row seats, dual-zone climate control, a 14-inch multimedia touchscreen (new) and 7.0-inch driver display, wireless Android Auto and Apple CarPlay, dual wireless phone chargers (new) and a six-speaker sound system.

The Solterra Touring comes standard with all this but adds 20-inch alloy wheels, a panoramic sun roof, ventilated front seats (new) and a 10-speaker Harman Kardon sound system.

The Touring also features a 220V vehicle-to-load (V2L) power outlet.

Audi has taken an ‘if it ain’t broke’ approach with the mechanicals, with all S4 and S5 models unchanged with this update. So the centrepiece continues to be the single-turbocharged 3.0-litre V6 that produces 260kW and 500Nm, with the latter available from a broad 1370-4500rpm.

The rest of the drivetrain is also unchanged, with the venerable but excellent ZF eight-speed torque converter auto paired with the Quattro all-wheel drive system that can send up to 85 per cent of drive to the rear wheels. 

The Solterra has two electric motors and as before there is one driving the front wheels, and one driving the rear wheels for all-wheel drive. Toyota’s bZ4X twin can be had in two-wheel drive and AWD.

The big news is the motors are now more powerful. Much more powerful. Combined output is 252KW (up from 160kW). That’s a huge increase but power is still less than the output of a Model Y or Zeekr 7X.

The front motor now makes 167kW/268Nm, while the rear motor produces 88kW/169Nm. Acceleration from 0-100km/h is about five seconds and that’s almost two seconds faster than the old version. 

Official combined fuel figures range from 8.6L1/00km for the S4 sedan to 8.8L/100km for the Avant, Coupe and Sportback, while the heavier Cabriolet steps up to 9.1L/100km. 

All are pretty good considering their performance potential and the size of these cars, plus the fact that they only require 95 RON Premium Unleaded fuel.

All have a 58-litre fuel tank, which should enable a range of at least 637km between fills based on the Cabriolet’s figure.

The updated Soltera’s battery size has increased to 74.7kWh. That’s up from 71.4kWh and means driving range has increased. 

The new, larger lithium ion battery delivers a range of 566km (WLTP) in the entry-grade Solterra (up from 414km). That addresses a big concern about the old car. The Touring has a range of 517km and any range above 500km is acceptable in my book.

Also big news is the increase in maximum AC charging capacity from 11kW to 22kW. DC charging capacity is the same at 150kW with 0-80 per cent charge in about 30 minutes.

Consumption officially ranges from about 14.6kWh/100km in the entry-grade Solterra to 16.0kW/100km in the Touring. The Touring we tested was reporting 17.0kW/100km according to the trip computer after 163km of testing in mainly urban conditions. 

The S4 and S5 range were already an excellent balance between everyday comfort and a genuine sporting edge, and nothing has changed with this update.

I spent time behind the wheel of the S4 Avant and S5 Sportback at their media launch, and both managed to deliver the proper Audi luxury experience over some pretty rough rural roads, while always feeling a bit more sporting than a regular A4 or A5. That’s with the Drive Select left in the default mode, but you can shift that sporting personality up a few notches (while scaling back the comfort), by selecting Dynamic mode. 

My preferred means of adjusting their personality is by simply tugging the transmission selector back to activate S mode, which livens up the engine and transmission without stiffening up the suspension. 

Across the five S4 and S5 bodystyles, there is some variance in performance potential, with the S4 sedan and S5 Coupe topping the performance chart with 0-100km/h boasts of 4.7s, with the S5 Sportback trailing them by 0.1s, the S4 Avant by a further 0.1s and the Cabriolet managing a still-fast 5.1s claim.

Another area I consider the S4 and S5s to get just right is their exhaust note. It is adaptive, but there’s nothing synthetic about it, and the generally muted and distinctly V6 burble is always there to remind you that you’re aboard a proper performance model, but not in such a way that it will annoy you, or your neighbours. Polite performance, if you will.

The Solterra may slightly lag behind rivals in some areas such as range and power output, but where most rivals can barely touch it is when it comes to driving.

Currently there aren’t many electric vehicles that are good to drive, except for more prestige offerings from brands such as BMW, Mercedes-Benz and Porsche. 

The Solterra is one of the best electric vehicles I have driven at this price point and it’s down to the outstanding platform it shares with the Toyota bZ4X which provides superb ride comfort, great handling and excellent steering.

Acceleration is strong and traction from the all-wheel drive is good.

Sure, while the driving position needs improvement, the car itself is excellent to drive.

Visibility is also good and sound intrusion is minimal. We noticed some materials making noises in the cabin. Although this is common, with no engine to mask it, it becomes more noticeable in EVs. 

The Solterra has been awarded the maximum five-star ANCAP rating - but that was given under 2022 testing criteria and the bar has been raised quite a lot higher since then. 

Still, the level of safety technology is high with AEB, lane keeping assistance, blind spot warning and rear cross traffic alert onboard. 

Front and rear parking sensors are standard on both grades, as is a 360 degree camera view. Auto parking is standard on the Touring.

A digital rear vision mirror is also standard on both grades providing a clear and unobstructed view.

There are seven airbags present, including a front centre bag. And there are three child seat top tether points across the second row with ISOFIX anchors in the two outer positions.

Audi continues to offer a three year, unlimited kilometre warranty, which is in line with BMW but lags behind the five years offered by Mercedes-Benz these days. This also contrasts with the five year norm among mainstream brands, which is punctuated by the seven year warranties of Kia and SsangYong.  

Service intervals are a convenient 12 months/15,000km though, and the same five year ‘Audi Genuine Care Service Plan’ offers capped price servicing for the same $2950 total over five years applies to all S4 and S5 variants. This is only marginally more than the plans offered for regular petrol A4 and A5 variants, so you’re not being stung for the thoroughbred versions.

The Solterra is covered by Subaru’s five-year, unlimited-kilometre warranty which is falling behind the seven-year warranty offered by many now. The battery is covered  by an eight-year, 160,000km warranty. 

There is also five years of capped price servicing with each yearly/15,000km service costing between $130-$300. That’s a very reasonable price.