BMW i Series vs Porsche 718

What's the difference?

The thing that really grabs you from behind the wheel of a car like this is just how far EVs have come. The fact you can get a ridiculous range and have a really, really good time on the right twisting road is a pretty good deal and solidifies the fact EVs like this one are the future.

Note: CarsGuide attended this event as a guest of the manufacturer, with travel, accommodation and 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 of 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.

If this is to be the end of the 718 as we know it, then it is an end to be remembered. Porsche has produced something special in the Spyder RS, a sports car that can compete with the 911 on any stretch of road - which is something so few cars can claim. The focus on performance has driven the entire concept of the car, but all the elements work in harmony, with form and function coming together.

It's hard to talk about the design of the BMW iX3 without spending some time at the front end. This is a bold, bold take on a BMW grille, and one that is entirely devoid of chrome or metallic lashings.

That’s not to say it’s boring. The iX3 has a light theme that runs inside and outside, the latter of which is called the Iconic Glow exterior package, which replaces the physical embellishments with white lighting that frames the kidney grille and the other inserts. It looks very cool and very modern.

In the cabin, the lighting theme continues, this time under the dash inserts that illuminate from within. But that’s not what really draws your eye.

That honour goes to the Panoramic Vision, which replaces the traditional driver’s screen with a pillar-to-pillar display that stretches the width of the cabin and displays all your key driving info.  It seems like a strange thing to get your head around but it felt natural almost immediately, with everything you might need (including a g-meter in its sportiest mode) on display.

Also new is the funky and chunky BMW steering wheel, which reminds me a little of one of those double-sided lizards, in that it can be hard at times to figure out which way is up, and which features 'Shy Tech' (features and controls stay out of sight until the driver or passenger needs them).

All in all, I like the space. There are just enough traditional-feeling elements mixed with new tech to make it feel futuristic and familiar.

As the pinnacle of not only the current 718 range, but potentially the entire combustion engine era of the Boxster, Porsche has pulled out all the stops for the Spyder RS.

This includes major changes to the design, but none are purely for aesthetic reasons and instead are driven by the search for performance; and the fact they make the 718 look tougher, meaner and more purposeful than ever before is just a bonus.

It’s a comprehensive redesign that starts at the bumper with a new front lip spoiler to enhance downforce. Then there’s a pair of NACA ducts on the lightweight bonnet to improve brake cooling without compromising aerodynamic drag. The lightweight front fenders include wheel arch vents to stop any potential for front-end lift at high speeds.

And the fenders aren’t the only component that’s gone on a diet, there’s a lighter exhaust, lighter wheels, lighter bonnet, lighter roof, lighter door panels and even lighter carpets on the inside. All up, the Spyder RS tips the scales at 1400kg, which is 40kg lighter than a standard 718 Boxster.

If it’s still not light enough, you can opt for the optional 'Weissach Package' (which was fitted to our test car), which brings even lighter 20-inch forged magnesium wheels and carbon-fibre reinforced plastic for a range of parts including the front luggage compartment, rollover bars and ducktail spoiler on the Gurney flap – plus some cosmetic enhancements.

And we still haven’t even touched on the biggest design change yet - the rear half of the car. Starting with the roof, which Porsche actually calls a ‘sunshield’ and ‘weather guard’ because it’s a stripped down version of what the brand usually uses, to save weight and let the glorious engine noise into the cabin uninterrupted.

But it’s also necessary because the entire rear engine cover has been redesigned to accommodate the larger engine that Porsche has installed in the Spyder RS, a 4.0-litre six-cylinder instead of the usual turbocharged four-cylinder ‘boxer’ engines.

While the Spyder RS looks great with the roof/sunshield on or off, frankly the removal process is much too complicated and requires repeated viewings of a YouTube tutorial to still get it wrong.

While owners will (likely) eventually get the hang of it, it will always be a clunky and awkward process and that’s just the price of being so focused on performance, which you can accept or not.

Inside that ethos of performance over practicality continues, with sports seats, an Alcantara-wrapped steering wheel and even the previously mentioned lightweight carpet floor mats.

It’s a purposeful, rather than luxurious, cabin, but that perfectly suits the nature of the Spyder RS. Our test drive included several long stretches behind the wheel and at no stage did it feel uncomfortable or impractical, despite its stripped-down design.

The BMW iX3 is 4782mm in length, 1895mm in width, 1635mm in height and it rides on a 2897mm wheelbase.

It doesn't feel huge, but there's certainly enough space in the back seat for me. At 175 centimetres I have enough knee and headroom sitting behind my own driving position, plus you can adjust the angles of the rear backrest to get a little more comfy.

But while the front seat feels very modern, the rear is more a traditional back seat experience. Back seat riders get their own air vents and temperature controls, twin USB-C charge ports and a pull-down divider with twin cupholders, but that's about it.

The auto-opening boot reveals a 520-litre luggage space (1750 with the seats folded), all of which is unencumbered by charging cables and the like, which are housed in the 58-litre frunk.

Towing and electric vehicles are never the greatest of matches, such is the drain on the battery, but the iX3 can be fitted with a standard tow ball, unlocking a braked trailer capacity of 2000kg.

One area where the 718 range is starting to show its age quite dramatically is the in-car technology. While Porsche’s native system is relatively user-friendly, the lack of wireless Apple CarPlay or Android Auto in any capacity is deeply out-dated; and was frustrating for this Android using reviewer.

Given the age of the current 718 platform, and the impending arrival of the new model, it’s understandable that the multimedia system didn’t get an overhaul, but for a $350K car it does feel a bit behind the times.

In practical terms the Spyder RS is a bit of a struggle if you plan to go away with it. We managed to get a small suitcase and backpack in the under bonnet storage, but that was at capacity. While the addition of the larger engine removes any meaningful rear storage space.

The bad news is, the Spyder RS costs just over $200,000 more than the entry-level 718 Boxster, which is not a small sum of money. The good news is, for that $200K, Porsche has overhauled the 718 from nose-to-tail and enhanced it in nearly every aspect.

There’s a raft of mechanical changes that we’ll get to later on, to help justify the $334,200, plus on-road costs, asking price, but from a specification perspective there are some notable inclusions. 

For starters it comes with the 'Porsche Communication Management' (PCM) multimedia system, which includes in-built navigation and Bluetooth connectivity, as well as a 110-watt sound system.

But Australian delivered cars get an even higher level of standard equipment than other countries, with LED headlights including 'Porsche Dynamic Light System' (PDLS), cruise control, digital radio, rear 'ParkAssist' with reversing camera, 'Light Design Package', tyre fit set and windscreen with grey top tint, plus a no-cost optional Bose Surround Sound System all included.

It may be $200K more than 718 but compared to a 911, it actually makes a pretty compelling value argument. A 911 Cabriolet Carrera S starts at $342,700 (plus on-road costs), making that Spyder RS $8500 cheaper and a genuine alternative to its ‘big brother’.

Then, when you compare it against similar mid-engine European sports cars, such as the Maserati MC20 (from $510,000) or McLaren Artura (from $477,310) the Porsche looks like a bargain; relatively speaking, of course.

We’ll focus on the 50 xDrive, as that’s the one we’ve driven, and because the powertrain is a peach. Its twin-motor all-wheel drive set-up delivers a total 345kW and 645Nm, which is a lot. And because there is no traditional transmission to step through, and because all that oomph arrives at once, it feels plenty punchy indeed.

BMW says the sprint to 100km/h takes 4.9 seconds, and we believe them. Top speed is a claimed 210km/h.

The key stat for the engine is the cylinder count. Gone are the four cylinders and instead it’s a return to Porsche’s iconic flat-six.

Specifically, the same 4.0-litre six that Porsche uses in its 911 GT3, which is a lot of engine to squeeze into the middle of this lightened sports convertible.

In order to keep the 718 in its place (beneath the 911), Porsche has slightly detuned the engine, so it makes 368kW/450Nm (compared to 375kW/460Nm in the 911 GT3), but the German brand has never worried about a kilowatt contest and instead prefers to focus on driveability and the other elements that make a drive great.

To that end the combination of air-intakes next to the headrests and the lightweight stainless steel exhaust (which gets titanium tips on the Weissach Package) helps the Spyder RS sound like a Carrera Cup racing car when you really wind it up to its 9000rpm redline.

Not that the performance isn’t spectacular, though, with Porsche claiming it takes the Spyder RS just 3.4 seconds to run 0-100km/h, only 10.9 seconds to get from 0-200km/h and will hit a top speed of 308km/h.

The engine is paired to a seven-speed dual-clutch auto transmission (or PDK in Porsche-speak) that the company claims has “short-ratios”, but with peak power not hitting until 8400rpm and peak torque from 6750rpm, you don’t have to rush the ratio changes.

As we mentioned at the top of this review, this is another big plus for the iX3. Its massive 108.7kWh net NMC battery delivers a maximum driving range of 805km, which is frankly ridiculous. To get it, you need to engage Efficiency Max, which dulls the drive experience, but that is an impressive number all the same. Engage the sportier settings and the figure drops to more like 650km-plus. 

Charging is 22kW AC and an impressive 400kW DC – or 300kW in the upcoming 40 model — which means a 10 to 80 per cent charge in 21 minutes when plugged into the fastest of chargers.

BMW says to expect 15.1-17.1kWh/100km in terms of energy usage on the WLTP cycle.

Porsche says the 4.0-litre engine in the Spyder RS uses 13.0L/100km, which is a big number for what is a relatively small car. But that engine is highly-tuned and built for performance not efficiency, so it’s something owners will need to accept.

Our test drive included some long highway stretches, as well as some spirited driving and urban commuting, so a good mix across all conditions, and we saw consistent returns around the 15-16L/100km range.

It has a 64-litre tank, which means a theoretical driving range of around 490km, assuming you can hit the official claim.

BMW spent a lot of time describing this car as being of revolutionary importance to the brand. It was designed as an EV from its inception, but is also the flag bearer for the New Class gen of cars, and so it has all sorts of features and tech that will roll out across the rest of the BMW range.

Does it feel overly revolutionary from behind the wheel? Not really. I mean, it drives forwards and backwards, and turns around corners when you move the wheel, all of which is to be expected.

But it does mostly feel very BMW, which I think is what they meant. The Jekyll-Hyde nature of the iX3 becomes apparent the moment you engage its sportiest driving modes and flatten your foot. This is proper push-you-back-in-your-seat acceleration that feels slightly more violent than the iX3's claimed zero-to-100km/h time suggests.

Then there's the flip side of that coin. Engage Efficiency Max and you can seemingly drive forever (or at least more than 800km), sipping battery juice and riding in peace, quiet and comfort. 

But at its core, and no matter the drive mode, it feels like a BMW. Crucial to that is a thing the brand calls the Heart of Joy, which sounds utterly sci-fi but really is a computer brain that works on traction and power to make sure you never lose grip.

If you've ever been in a car where the traction control light is flashing on a dash, you'll know what usually happens is it cuts engine power until you find grip, and it gives you power again, then cuts it, then gives it to you as required to find the grip, and it can give you that kind of jerky, stop-starty kind of feeling.

The iX3 doesn't do that. Instead, it plays with traction and is far more subtle without ever cutting power, and gives you the feeling of being able to tip into a corner and then power out without ever feeling like you're going to lose grip, or power.

The bigger electric motor is at the rear axle, which delivers most of your performance unless you need extra grip. So, when you are powering out of a bend, it feels a lot like a rear-wheel drive car and really well sorted from behind the wheel.

If that's the driver's side of the equation, the other side of it is pretty good, too. We took to the town at city speeds, and it was super comfortable, quiet and absorbed most of the road imperfections pretty easily.

Interestingly, the suspension isn't high-tech. There's nothing adaptive about it, and there's no air cushioning or anything like that. But it feels well tuned, and is pretty comfortable, even on dodgier road surfaces, while still delivering a sense of connection.

My favorite kind of mid-size SUVs are ones that have that dual nature. Something that has space for the family and all of their things, but also something that can be a fair bit of fun on the right twisting road, and this one absolutely nails that brief. It is a hoot to drive on twisty stuff. 

Downsides? Well, you can't entirely disguise more than two tonnes of weight. If you're going downhill, especially on a twistier road, you can feel the weight around you, especially when you go to pull up in a hurry, despite the strong-biting brakes.

The other thing is the steering, which is direct and lovely but quite light. It doesn't have that meaty heft some BMWs offer, and as a result, it can be interesting to place the vehicle. You can find yourself a bit further over in the lane, or further away from an apex than you're expecting, because your light inputs have really shifted the vehicle. 

But BMW has nailed the brief here. Do keep an eye out for the cheaper one that's coming, though. It could be a bang-for-bucks, rear-drive bargain.

I’m only giving it a nine out of 10 because perfection is hard for any car to achieve, but the 718 Spyder RS goes as close as any car I’ve driven. This is a masterpiece of modern sports car design, pushing the 718 closer to the 911 than ever before, which is something Porsche has clearly tried to avoid so as to not tarnish the image of its flagship.

But with the 911’s 4.0-litre flat-six in the middle of the 718, plus its more compact dimensions, the lightweight nature of the Spyder RS and the raft of chassis and handling enhancements, this really does leave you questioning ‘do I really need a 911?’

The steering is fantastically direct, the chassis responds to every input with precision and feedback and the braking is strong and consistent. Which helps because that engine is so good it launches you with ferocity and a glorious noise (as good as anything on the market today) whenever you squeeze down on the accelerator.

The highest praise I can give the Spyder RS is not that it was a dream to drive on winding, challenging roads, but that it was just as enjoyable on a trip to the shops or cruising down the freeway. Any drive in this car is a genuine pleasure.

This is another area where the 718 is showing its vintage, with very little in the way of active safety features. There’s the required stability control, as well as airbags for driver and passenger, plus the previously mentioned reversing camera. But that’s it, there’s no autonomous emergency braking, no lane-keeping assist or even adaptive cruise control.

While that may sound shocking to some, there’s never a moment where you feel unsafe in the 718. It feels incredibly stable and responsive on the road, as the onus falls back upon the driver to pay attention and make smart choices.

There’s no ANCAP rating for the 718, or any Porsche, so it is a question of putting your faith into Porsche’s in-house safety measures.

BMW offers a five-year, unlimited kilometre warranty, which is about right for the traditional premium players, but off the pace elsewhere. The traction battery is then covered for eight years or 160,000km.

The service intervals are condition based, rather than timed, and BMW sells a pre-paid package for the iX3 which is $1614 for four years, or $2420 for six years.

You can upgrade either to what BMW calls Service Inclusive Plus, which includes high-wear stuff like brake discs and pads and it is $5535 for four years or $6615 for six years.

There are around 50 BMW dealers across Australia covering mainly cities and key regional centres.

It’s difficult to give the Spyder RS a clear score here because Porsche is cagey on the details. The public dealer websites indicate annual oil maintenance is required, with additional servicing every two years or 15,000km. 

How much that will cost is unclear, as despite the rest of the 718 range having publicly available prices, there were no such details for the Spyder RS (or even its Cayman sibling, the GT4 RS).

For reference, the 'standard' 718 requires oil maintenance ($895) for the first annual service and an inspection ($1500) the year after. Those costs continue to alternate annually out to eight years/120,000km.