BMW I3 vs Toyota Prius C

What's the difference?

Yes, it’s pricey for a small hatch, but this little BMW is a city car like no other. The i3s is tailor made for the urban environment, and six years on retains the quirkiness and charisma that stood it apart at launch, and it can still hold its head high among the current EV crop. 

It's as if the the future is firmly rooted in the past at Toyota. The Prius is still undoubtedly clever, frugal and easy to drive, but it is feeling so old in places that the bad had begun to weigh on the good. If you're a tech-head or have a right foot crafted from lead, then there's nothing to see here. But if the thought of saving money at the bowser sets your heart aflutter, then step right this way.

Built around a carbon-fibre reinforced plastic (CFRP) tub, the i3s is ultra-light (for a battery-electric vehicle), super strong, and unlike anything else on the road.

At just over 4.0m long, close to 1.8m wide, and a fraction under 1.6m tall, the i3s is compact, upright, and boxy. A classically polarising design, with some crossing the street to avoid it, and others (like me) loving its unique proportions and stand-out styling.

The nose is tall, short and upright, with the distance from the base of the front windscreen to the front axle (car designers call it the ‘dash-to-axle ratio’) unusually short.

That’s because the electric motor sits in the back of the car driving the rear wheels, with only a small front boot compartment required to house charging cables and other bits and pieces.

Despite the lack of anything of substance behind it, BMW’s signature ‘kidney grille’ is present and accounted for, with swoopy LED headlights (and DRLs) either side. Our test car’s ‘Fluid Black’ finish with ‘i Blue’ highlights dialed up the little car’s charismatic personality.  

One of the i3’s most impressive party tricks is its counter-opening ‘clamshell’ doors, and the engineering trickery used to create a B-pillar free side opening (including the strength of the carbon body structure) means the high window line follows a jagged path from front to back, the rearmost hatch windows shrinking the rear glass area appreciably.

The i3s’s standard 20-inch (dual) five-spoke alloy rims, although slightly wider in this performance model, are alarmingly skinny. But taking the car’s relatively light weight (1245kg) and urban-centric purpose into consideration, the narrow, low-rolling resistance rubber makes sense.

With the roofline and sides of the car tapering distinctly towards the back, the rear view is suitably idiosyncratic, highlighted by flush-fit, vaguely U-shaped LED tail-lights. 

The hatch window is small, and the bumper sits high to marry with the load space floor sitting on top of the motor and transmission.

And when it comes to moving inside, BMW offers a choice of three ‘interior worlds - ‘Loft’, ‘Lodge’, and ‘Suite’ - featuring renewable natural fibres, recycled plastics, naturally tanned leather, and open-pore wood (sourced from 100 per cent Forest Stewardship Council-certified forestry).

But irrespective of where everything comes from, the end result is inviting, comfortable and sub-zero cool. Our car’s ‘Suite’ interior was combined with ‘Oak dark matt’ wood, and ‘Vernasca’ brown leather to stunning effect.

A tunnel-free floor, gently curved dash and digital screens for instruments and media let you know you’re in something different and special. It might be six years old, but the i3 still feels contemporary and distinctive. 

The good news is that it doesn't look quite so quirky as the full-size Prius. The not-as-good news is that it's still no beauty-contest winner. Not helping matters was the fact our test vehicle was painted in a retina-burning yellow (they call it Hornet Yellow, and it's new for 2018) that looked almost nuclear.

Viewed front on, the blacked-out section of grille and bumper gives the littlest Prius a vaguely manta ray-shaped front-end, while the headlights climb both upwards and back into the body, lending a sense of sportiness to this very unsporty hybrid. From the back, the chunky bumper, vertical taillights and rear windscreen spoiler all add a little attitude to the design.

Inside, you'll find a small but premium-in-places space, with a gloss-black stereo surround that angles the main controls toward the driver, while the digital driver's binnacle is pushed toward the centre of the car, displaying speed, fuel and other key info above the stereo, rather than in front of the steering wheel.

Wide-opening clamshell doors make getting in and out of the i3s a breeze. But bear in mind you have to open the front door to get to the latch for the back one, which can be a pain.

The driver and front passenger enjoy heaps of room, in an open environment, but there’s only a single cupholder in the centre console, so let the coffee cup wars begin.

Aside from that there are seriously big bins in the front doors, a modest glove box, and a handy elasticised pocket near the floor at the base of the bulkhead.  

Outlets for 12-volt and USB are provided, and there’s a small oddments tray at the rear of the centre console.

Slip around to the rear and you’re in anything but limousine territory. Sitting behind the driver’s seat set for my 183cm height, head and legroom are modest but do-able. And remember it’s two seats only back there.

In terms of storage, there are two cupholders between the seats but no storage pockets or bottle holders in the doors. You won’t find adjustable ventilation outlets either, but that’s not a huge factor in car of this stature.

The boot’s volume is quoted at 260 litres with the 50/50 split-fold rear seatback upright, which is enough to easily swallow the largest 124-litre suitcase in the CarsGuide three-piece set. The smaller 95- and 36-litre cases will sit side-by-side without a problem.

Fold the rear seat down and you have 1100 litres of space at your disposal, with tie-down anchors, an elasticised pocket and 12-volt power provided.

Don’t bother looking for a spare of any description, a repair/inflator kit is your only option. And not surprisingly, the i3 is a no-tow zone. 

Not very. This is a Yaris-based city car, let's not forget.

That said, it never feels cramped up front, with enough shoulder and headroom to ensure you feel separated from your fellow passengers, where you'll also find two cupholders, and an infuriating USB connection housed in the touchscreen - so your cord dangles from the dash when connected.

Climb into the back, and you'll find yourself in a pretty snug space. Sitting behind my own (5ft-8inch) driving position, it's only the scalloped back of the driver's seat that affords me any clear air between my knees and the seat in front, and the space behind my head and the roof lining is minuscule, too. But again, we're talking city car space here, so you can't expect to lounge about back there.

The ambience in the backseat leaves a little to be desired, though. The door trim pushes into the passenger space, and the plastics used in the rear are rock hard. There's a single cupholder to share, and a seat-back pocket on the rear of the passenger seat, but that's it; there's no vents, USB or power sources. There's no bottle-room in the rear doors, either.

An easy-access boot space will swallow 260 litres with the 60:40 rear seats in place. And there are two ISOFIX attachment points, one in each window seat in the back.

We've just spent a week behind the wheel of the Prius c i-Tech; the top model in the two-variant range, sitting above a cheaper model known simply as the Prius c.

At $26,540, it ain't cheap for a city car (and it's $4k more than the most-expensive Yaris on which it is based; more worryingly, it's only $1500 cheaper than an Audi A1), and the standard features list is more a novella than War and Peace.

Outside, you'll find 15-inch alloy wheels, remote unlocking, LED headlights and front fog lamps, while inside you'll leather-look seats (they're actually vinyl), sat-nav and climate-control.

Tech is covered by an  (old-school feeling) 6.1-inch touchscreen that pairs with a six-speaker stereo, but there's no Apple CarPlay or Android Auto.

The i3s is powered by BMW’s ‘eDrive’ hybrid synchronous electric motor, producing 135kW at 7000rpm, and 270Nm from 0-4500rpm. Yep, that’s right, maximum torque is delivered the instant you depress the right-hand pedal, and we’ll get to what that brings to the driving experience a little later.

The unit incorporates a charging and generator function for braking energy recuperation, the latter delivering up to 50kW.

Drive goes to the rear wheels via a single-speed (fixed-ratio) automatic transmission.

The battery powering the whole show is a 352-volt/120 amp-hour (Ah) Lithium-ion unit with a (gross) energy rating of 42.2kWh.

Under that little hood lives a 1.5-litre, four-cylinder petrol engine good for 54kW, which pairs with a 45kW electric motor. Toyota lists combined outputs at 74kW at 4800rpm and 111Nm at 4000rpm.

That hybrid setup partners with a CVT automatic, pumping power to the front wheels.

When it comes to an electric car’s energy use and projected range, there are two main things to consider - the motor’s power consumption and the battery’s capacity.

And according to BMW, the i3s’s power consumption for the combined (urban/extra-urban) cycle is 14.6–14.0kWh/100km.

Over a week, and roughly 250km of urban driving (with some brief freeway runs thrown in) we saw 19.3kWh/100km staring back at us from the on-board computer.

When BMW launched the i3 in Australia in 2014, the pure EV version came with a 60Ah battery pack delivering a claimed 130 kilometre range (a range extender model featuring the addition of a two-cylinder petrol motorcycle engine was also offered). 

In 2016 a 94Ah version arrived to boost range up to 183km, and the i3s launched in 2018, with its 120Ah battery pushing range out to BMW’s current, real-world estimate of 260km.

Then, there’s charging time, which is like asking how long is an electric piece of string.

According to BMW, for a 0–80 per cent charge from a (50 kW DC) fast-charging station, you’re looking at 45min.

From a (11kW/16A/380V) high-output home/office wall unit, that pushes out to 3.10h, and using a (3.7kW/16A/240V) low-output home/office unit stretches the wait time to 9.40h.

BMW offers the ‘WallBox plus’ charging suite as a dealer accessory priced from $1990 (not including GST or install costs).

Plug into a domestic (2.4kW/10A/240V) socket, and you’re staring down the barrel of 15.00h. But at least you can use low-cost, off-peak energy overnight, right? Nah, I don’t buy that line either.

If that last section didn't impress, this one surely will. The little Prius c will sip a claimed 3.9L/100km on the combined cycle.

That's very low, and the fact it accepts cheaper 91RON fuel makes it a very affordable car to run. Except... the onboard computers revealed a slightly less-impressive 5.1L/100km after my time with the car.

Emissions are a claimed 90g/km of CO2, which is very good.

It might not look like a conventional sports car, but the BMW i3s certainly accelerates like one, with a claimed 0-100km/h time of 6.9sec. The i3s is a smile-inducing hoot to drive.

Every one of this little hatch’s 270 newton metres of torque is available from the minute you hit the accelerator pedal, and remain in service until 4500rpm, at which point torque delivery drops off a cliff.

But peak power steps in at exactly 7000rpm, so if you’re determined to make that overtaking move you won’t be left in the lurch. In fact, BMW says it only takes the i3s 4.3 seconds to surge from 80km/h to 120km/h.

However, the i3’s forte is 100 per cent the city, rather than the open road. Its ‘point and squirt’ ability making it the perfect partner for the cut and thrust of the urban jungle.

The i3s features an upgraded ‘Sports Suspension’ incorporating firmer dampers, re-tuned springs and revised anti-roll bars. It’s also lowered 10mm, the track is widened (+21mm front / +2.0mm rear) and the wheels go plus one inch to 20-inch alloys.

The standard i3 (no longer offered in Australia) rolls on 19-inch rims shod with 155/70 rubber all around. And while the i3s’s 175/55 front and 190/50 rear tyres are still exceptionally narrow, from the side the low-profile Bridgestone Ecopias look like fan belts wrapped around pulleys rather than tyres around wheels..

No surprise then that ride comfort isn’t exactly cushy, and in signing on for the i3s experience you’ll need to be ready for more than occasional bumps and thumps.

But the pay-off is super-sharp dynamics, Suspension is by alloy struts at the front, and a five-link alloy set-up at the rear..The steering responds to inputs quickly yet smoothly, and with 48/52 front to rear weight distribution, the car always feels balanced, eager, and taut.

And if you really want to dial things up the ‘driving experience control’ allows a switch to Sport mode for a further tweak of the suspension, steering, and traction control set-ups.

A tight 10.3m turning circle makes for easy parking and stress-free U-turns. But if things get too tight, rapid three-point turns are assisted by the gear shift controller bring mounted on a chunky stalk on the right-hand side of the steering column. Too easy.   

Braking is by vented discs front and rear, but they’re tiny. That’s because the ‘Brake Energy Regeneration’ system does most of the work. 

Effectively turning the motor into a generator, the system not only slows the car dramatically but feeds energy to the battery in the process. It takes a while to get used to the sensation, but soon becomes a fun, and surprisingly easy game to use the brake pedal as little as possible… often not at all, for long periods.

In much the same way that you don't buy an exotic performance car for its ability to run to the shops, you're unlikely to be buying the Prius for its ability to set your pulse racing.

But happily, it doesn't feel wobbly or disconnected, either. It's aided by being such a small package, and when you're not wafting silently about in electric mode, and you've coaxed that little petrol engine into life, it serves up more than enough poke to navigate the city, and even to leave the slow-reactors in your rear-view mirror at traffic lights.

The ride is good, too, feeling connected to the road below without feeling uncomfortable, although the little Prius does tend to track with the corrugations in the road, leaving you to wrestle it back into line. That's a job made easier by light and surprisingly direct steering, which feels tailor-made for the city.

Finally, the leather-look seats are comfortable, even over long distances, the razor-thin A-pillars make forward vision easy and it's a very simple thing to drive and manoeuvre  into parking spaces. And all of those are good things.

Not so good? Well, the entire drive experiences feels a little beige and emotionless, it can get noisy and there are parts of the cabin that feel downright cheap. Worst of all, though, is that for a car that once heralded the future, it's feeling very, very dated.

But there are some amazing quirks attached to driving an (almost) electric car, including the delivery of eco awards for using the least amount of fuel (they were awarded for 2.6, 3.2 and 3.6L/100km over as much as 25km - none of which occurred during my tenure). The hardest thing to get used to was the absolute silence served up in electric mode. I counted four seperate occasions when I walked away from the car with it still turned on.

Every Prius c arrives with seven airbags, along with a reversing camera and... wait, that can't be it, can it? Oh... Forget AEB, lane-departure warning and the like, this future-focused Prius has a safety package firmly rooted in the past.

It was awarded the maximum five-star ANCAP safety rating, but was tested back in 2014.

BMW offers a three year/unlimited km warranty, which is off the pace given the majority of mainstream brands have stepped up to five-year cover, with some at seven. And the pressure is on with Mercedes-Benz recently announcing its shift to five years/unlimited km.

That said, the BMW's body is warranted against rust (perforation) for 12 years/unlimited km, and roadside assistance is provided free-of-charge for three years/unlimited km.

Maintenance is 'condition based' with sensors and on-board algorithms (mileage, time since last service, driving style) determining whether an annual vehicle inspection is required.

The 'BMW Service Inclusive' package, offering a single, one-off advance payment to cover selected service and maintenance costs, is available in two levels - 'Basic' ($850) or 'Plus' (dealer quote)

Toyota offers a three-year/100,000km warranty, while the batteries are covered for eight years or 160,000km. The car's six-month service intervals might sting a little, though, but with each service capped at $140 for the first three years, even taking two trips to the dealership a year isn't too expensive. Just annoying.