Smart 3 vs BYD Atto 2

What's the difference?

The #3 Brabus is very nearly one of the great bargains of 2024, with the sort of style, luxury, features, performance and grip you’d expect from the much-more-expensive GLA AMG 45. It’s that good.

What would make it great is a sunblock for the hot glass roof on a sunny day, Australian road tuning for the infuriating ADAS tech and a revised steering tune that didn’t make it feel inconsistent at times.

See past these, though, and the #3 Brabus exceeds expectations.

We’re glad Smart is back.

The BYD Atto 2 isn't just the cheapest electric SUV in Australia, it's also one that doesn't feel all that cheap, which is a hell of a magic trick. If it's easy, comfortable city motoring you're after, the Atto 2 delivers in spades. But if your blood type is high octane, there are better driving EVs out there.

Note: CarsGuide attended this event as a guest of the manufacturer, with meals provided.

Note: The author, Andrew Chesterton, is a co-owner of Smart As Media, a content agency and media distribution service with a number automotive brands among its clients. When producing content for CarsGuide, he does so in accordance with the CarsGuide Editorial Guidelines and Code of Ethics, and the views and opinions expressed in this article are solely those of the author.

Smart says Mercedes designed the #3 and it shows.

In silhouette, or when glanced peripherally, it could be the love child of the A-Class and EQA. Only the friendly face betrays its non-Benz heritage.

Longer and wider than the #1, it is also 80mm lower – achieved via a lower ride height, flatter seats and a thinner floor.

Helped by a 35mm wheelbase stretch, it provides a nicely-balanced and proportioned crossover, with a decent drag coefficient of 0.27. The Brabus’ big wheels also fill out the arches very nicely.

Key length/width/height/wheelbase dimensions are 4400mm/1844mm/1556mm and 2785mm, respectively.

Unusually for a coupe/crossover mash-up, there’s slightly more room inside compared to the upright donor model.

Let’s take a longer look in there.

I think it’s a sharp-looking thing, this Atto 2. Kudos to BYD for not making the design look like it’s trying too hard, or like the Atto 2 is something it isn’t. It’s just smooth, sensible small SUV with styling that looks like it will age gracefully.

I like the chunky black moulding which makes it look a bit tougher than it is, plus the LED DRLs and swept back (and spoiler-equipped) roofline add a bit of visual drama.

Inside, BYD has made two pretty good choices. The first is that the cabin feels toned down from the one in the Atto 3 (which is all chunky wheel-style controls and vents). 

This one feels far more sedate and conventional in its design, which I think is a win.

The other good decision is to equip the Atto 2 with soft plastics, rather than hard scratchy ones, in places like the door panels. In some cheaper cars, you feel your elbows constantly rubbing against cheap-feeling plastics, but that’s not the case here.

Too much stuff is still controlled through that central screen, and BYD has an awkward way of shortcutting functions. They call it a three-finger swipe, meaning that if you run three fingers across the screen horizontally you can adjust the climate-control’s fan speed, while swiping horizontally adjusts temp, but it feels like a weird movement.

On first approach, you ask yourself whether the #3 is a crossover or a small-to-medium SUV. The low roof and cool frameless doors certainly suggest the former, as do the comparatively small apertures.

That said, with the windows down, those sash-less doors help entry and egress.

Once ensconced inside a long if slightly narrow cabin, the #3 offers ample room for even the tallest adults up front, as well as a reasonably spacious back seat area, though you’d call that more of a '2+1' seater given the lack of girth for three. Most folk shouldn’t struggle to find the right driving position, either.

Presumably keen to impart a generic Mercedes vibe, the #3’s interior is somewhat reminiscent of a GLA’s, albeit from last decade – down to the pronounced T-shape dash featuring a trio of circular vents in the middle, a standalone screen above and (unconvincing) metal-look plastic trim below.

Understandably, like so much of the Brabus, this might appeal to aspiring A45 AMG owners, but it seems oddly dated, given the advanced electrification going on underneath.

Likewise, none of the minimalism cleverness of the ForTwo city-car original is referenced, even digitally. A lost opportunity, really. The OG Smart is an icon.

Meanwhile, ahead of the driver, a narrow digital strip looks twee and cheap, as if ripped from a Japanese 'Kei' car. It’s a strange design detail for a $71K SUV.

Still, the #3’s cabin layout is largely a success, and much of that is due to the first-class quality and finish. Unlike some of the aforementioned Benzes of the previous decade, squeaks and rattles are notable by their absence.

Depending on your body, the racy sports seats up front are either perfectly bolstered or far-too snug, but they provide a decent level of comfort and support. And they position you just right for controlling the centre display, which dominates all.

The 12.8-inch touchscreen feels slick, responsive and right-sized for the car. At first, it can also seem like info-overload and perhaps a bit cheesy with its animal animations, but real thought has gone into it to provide an extraordinary level of functionality.

Across the top are icons for access to media, sat-nav, apps and camera view settings, while the bottom row is for various climate and trip info. While somewhat logically presented, the charging-station list seemed outdated and/or at-times incorrect in our test car.

Mercifully, the Smart has a row of short-cut buttons for 'Vehicle Modes' (including turning off the infernal lane assist and one-pedal accelerator/braking), 'Driving Mode' ('Eco'/'Comfort'/'Sport'/'Brabus'), glass demisters, climate and display-off.

Annoyingly, the latter is closest to reach, revealing the #3’s left-hand drive market bias, as the driver must stretch across to access the first two (and more important) settings.

There are also several handy screen-activated modes including 'Entertainment Mode' that temporarily leaves the accessories and climate control on; 'Rest Mode' reclines the driver’s seat down flat and dims the interior lights; 'Energise Mode' is designed to pep you up; and 'Pet Mode' keeps a climate-controlled atmosphere while deactivating all buttons that a stray paw might press. Clever.

There’s lots more besides, and using the touchscreen is better in this than most other Chinese vehicles, but it remains fiddly and distracting.

It’s also worth pointing out that the fixed glass roof needs a blockout for Australia. A Smart spokesperson said an aftermarket cover is available, but as supplied to us, sitting under it over a run of hot days is almost unbearable without a hat. This is not good enough.

Thankfully, the other basics are all A-OK.

The climate system coped well the hot sun bearing down through the glass, plenty of useful storage makes up for the disappointingly shallow glove box, while the chilled centre console and massive door bins proved especially handy.

USB access is easy, the wireless Bluetooth/Apple CarPlay performed more consistently than in any recent test vehicle and the standard Beats audio brings brilliant sound.

Out back, most people under 180cm should at least avoid scraping that glass ceiling, and there’s a reasonable amount of room for boots and long knees if the front occupants are sympathetic, but you’d be stretching the truth calling the rear seat packaging SUV-esque.

On the other hand, it’s beautifully presented, boasts a comfy and supportive backrest/cushion for outboard passengers and even a do-able centre pew for shorter-distance riders.

And it provides every expected amenity, including air vents, USB-C ports, door storage, a folding centre armrest with cupholders, and overhead handles/lighting/coat hooks.

And while we’ve already complained about the glass roof, it floods the cabin with light, to make it seem airier than it is. Narrow front seats with a see-through slit further enhance this feeling.

Further back, the 370-litre boot is reasonably long and surprisingly deep thanks to a removable upper floor that’s good for stuffing the optional home charging cables in.

And, of course, it can be extended to 1160L via the split-fold backrests to provide extra loading practicality. And there’s even a small (15L) amount of storage under the bonnet.

Maximum towing capacity is 1600kg for a braked trailer.

The Atto 2 measures 4310mm in length, 1830mm in width and 1675mm in height and it rides on a 2620mm wheelbase. It also sits on BYD’s fully-flat EV platform, which helps to maximise space in the back seat.

I’m 175cm tall and could get comfortable behind my own driving position, with enough knee and headroom to ensure I didn’t feel cramped.

There are two ISOFIX attachment points, one in each window seat in the back as well as USB-A and -C connection points.

Boot space is a not cavernous, but also not tiny, 380L with the rear seats in place, growing to 1320L with the rear pews folded flat. Both models also offer a V2L (Vehicle to Load) connection, too, so you can power up household devices.

This thing really is cheap. The BYD Atto 2 arrives with a two-model range kicking off with the Dynamic, at $31,990, before on-road costs, before stepping up to the Premium at $35,990 BOC. They both get the same motor and battery, by the way, so the extra money comes down to extra kit.

The Dynamic rides on 16-inch alloys wrapped in cheaper Westlake rubber, scores LED headlights and DRLs and gets rain-sensing wipers and heated wing mirrors. Inside, there’s a 10.1-inch central touchscreen, an 8.8-inch driver display, synthetic leather seats with manual adjustment up front and wireless Apple CarPlay and Android Auto linked to a four-speaker stereo.

The Premium rides on 17-inch alloys wearing better Hankook rubber, and there’s a panoramic glass roof with a shade and roof racks. Inside, the central screen grows to 12.8 inches, and there’s an eight-speaker stereo and a wireless charge pad. Your seats are now electronically adjusted and heated and cooled. Plus there’s some extra safety stuff, but we’ll cover that off in a second.

The #3 Brabus employs one permanent magnet synchronous electric motor per axle, for dual-motor, all-wheel drive performance via a single-speed ‘transmission’. 

They provide plenty of poke, totalling 315kW of power (115kW front, 200kW rear) and 543Nm of torque (200Nm front, 343Nm rear).

Tipping the scales at 1910kg, this means the Brabus delivers an impressive power-to-weight ratio of 165kW/tonne – enough for it to scoot from zero to 100km/h in 3.7 seconds, on the way to a 180km/h top speed.

To put those figures in perspective, the similarly-priced VW Golf R only manages 156kW/tonne and 4.8sec to 100.

Both Atto 2 models share the same powertrain - a front-mounted electric motor producing 130kW/290Nm which is sent to the front tyres. It feels fairly sedate, even under flat-footed acceleration, though BYD reckons you can knock off the sprint to 100km/h in 7.9 seconds.

All #3s headed to Australia for now are fitted with the larger of the two battery packs available – a 66kWh lithium nickel cobalt manganese (NCM) item.

In the Brabus, it is rated to average up to 415km of WLTP-certified range, which is between 20-40km shy of the mid-spec Premium version.

Smart says the WLTP average energy consumption is 17.7kWh/100km. Our 3000km-old test car’s trip computer displayed a life-cycle average of 14.6kWh/100km since delivery.

During our week with the Brabus, we managed an average of 19.4kWh/100km, and that was over a 95km period of sustained highway driving at 114km/h with cruise control on and climate control set at 18 degrees (to combat the radiant heat from that glass roof).

With a big 22kW AC charger and 150kW DC charger capability, the former will replenish that 66kWh battery in about 32 hours using a home plug or 10 hours with an optional 7.0kW Wallbox, while the latter will need just over an hour from 10-80 per cent with a common 50kW DC charger.

Both models also share the same battery, a 51.1kWh LFP unit, which should unlock a WLTP driving range of 345km. AC charging is pegged at 7.0kW, so a good match for a standard home wallbox, while DC fast charging is 82kW. Using the latter, BYD says you should go from 10 to 80 per cent charged in 38 minutes.

Whatever notions ‘Smart’ might evoke, the #3 Brabus obliterates them. This is no buzzy little city-car runabout, but a surprisingly mature and athletic driving machine. This is a seriously rapid performer.

A trio of driving modes give you a hint of what you’re in for. Eco is lightness and fluff. Not very Brabus, but smooth and calm enough for relaxed commuting. And it’s far from slow, scooting off the line with zip and zest. Enough for most.

Comfort is actually a good all-round setting to be in, with an eager yet controlled level of performance. Strong acceleration and instant accelerator reaction show you mean business – if you’re in the mood. Still civilised and serene otherwise.

Sport ups the ante, as you’d expect, providing a decent whack of speed and immediate response. Actually, this is enough to keep up with most sports car costing thrice the price, while maintaining the driver-assist safety net. Fun without the fear.

Brabus mode is off-the-leash fury, turning the #3 into a convincing AMG alternative thanks to blistering thrust and a powerful punch across the spectrum. More (artificial) noise, more drama, more speed, more fireworks. The 'Launch Control' pins you to your seatback.

Yet even in the latter setting, the Smart behaves with a maturity beyond the brand’s reputation, capable of quick corners with exceptional (AWD-enhanced) body control and roadholding grip, without a punishing ride.

Underneath, a unique suspension tune for the MacPherson-style struts up front and multi-link rear end keep the Brabus hunkered down more effectively at speed.

And even in pouring rain, there are no complaints about the Brabus’ assured and confident handling. Yes, the suspension is firm, but it’s far from uncomfortable, so, an acceptable trade-off.

Plus, though not strictly one-pedal driving, the regenerative braking pressure is enough for slowing down and speeding up in the ebb and flow of traffic in its strongest mode.

Where we’re less happy is in the #3’s steering. It brings three weight modes to the table – but only two are useful, 'Light' and 'Standard'. Super-easy yet not totally devoid of substance, Light is great for around town and general commuting.

But when you lean on it at speed, the steering, whilst crisp and reactive, is not always linear in feel or motion, especially when accelerating at the same time, as you might when coming out of a fast corner.

Depending on how hard you are on the accelerator, there can be a visible step when turned from the straight ahead that can be quite disconcerting. It’s a bit like when slurping in a lumpy bit in a smoothie.

So, what about 'Sport' mode? Here, the steering is just as described above, but with added weight and not much more. Not worth it. Best is Standard mode.

Another disappointment is the advanced driver-assist safety (ADAS) tech’s state of tune. It’s in a state, literally.

The intrusive and apparently non-permanently switch-off-able lane-keep systems, especially, end up resisting what the driver intends, and even fight to steer the car where it thinks it needs to be. This is frustrating and potentially dangerous.

It’s been reported that Geely, and not Mercedes, undertook the development of these ADAS systems. We’re getting sick of (mostly Chinese) manufacturers rolling the arm over and imposing this sort of nannying and ultimately counter-intuitive driving interference tech.

This needs to be fixed. It stops the #3 Brabus from being a great performance bargain.

Your drive experience in the Atto 2 very much depends on what you ask of it.

Or to put it another way, the first half of my drive route was a breezy run through the city and suburbs, then onto the freeway, before arriving at our destination. 

It was probably 60 kays or so, and across it all the Atto 2 felt quiet and comfortable, with enough power at its disposal to easily get up to speed and stay there. 

In the second half, though, I hunted down some twisting roads and cracks started to appear. The ride is pretty solid and there isn't huge amounts of body roll during more enthusiastic cornering. 

But the steering is vague and there's plenty of slack – you can turn the wheel a fair bit without eliciting much response from the tyres.

Interestingly, turning the wheel with a bit of aggression also produced a weird sound up front, like you could hear the mechanicals shifting the tyres.

The tyres make a difference, too, with the Premium's more expensive Hankook rubber far happier to hang on without squealing than the Dynamic's Westlake tyres. 

But context is key here. The Atto 2 is an accessible, affordable city-focused EV, and it performs those duties admirably. But if you're sold on a car-driver connection, there isn't much of that on offer here.

The Atto 2 is yet to be assessed by ANCAP but there’s no shortage of stuff. The entry-level car gets six airbags, rear parking sensors and all the usual traction tech. Then there’s active cruise, lane departure warning, blind spot monitoring, cross-traffic alert in both directions - the list goes on. In fact, the only things the Premium adds on top are a 360-degree camera and front parking sensors. 

The #3 offers a (decidedly-average) five-year or (disappointing) 130,000km warranty, whichever comes first. There is also roadside assistance available for free during this period.

Given other EV manufacturers are going seven and even 10 years in the case of MG, with most including unlimited kilometres, this could be better.

Scheduled maintenance is every 12 months or every 20,000km.

Smart provides a pre-paid four-year/80,000km service plan for $3120, which comes to $780 annually. This seems quite expensive for an EV, even a premium one.

BYD’s warranty is an okay six years but just 150,000km, which is underwhelming compared to the best in the business. The battery is covered for eight years or 160,000km.

BYD vehicles typically have 12 month, 20,000km service intervals with capped price servicing, but the details are yet to be confirmed for the Atto 2.