BMW 4 Series vs Lexus RC300

What's the difference?

The BMW M440i xDrive Gran Coupe manages to combine sleek design with a fun-to-drive personality and surprising practicality. It’s a rapid premium, four-door, five-seater offering extra flair, and in this part of the market, good value. But more than anything else it’s got a cracking in-line six under the bonnet.

Still a rock-solid option in the (admittedly not massive) premium-coupe space, the Lexus RC looks and feels like a quality product. The 2018 update has addressed any safety shortcomings, even if the interior technology still feels a touch behind the times.

But an out-and-out performance car this ain't. Even in cars fitted with the big V8 engine, the RC behaves more like an effortless grand tourer than it does a performance coupe. But if we're being really honest with each other, that only serves to make it much easier to live with.

So, how does this four-door 4 Series differ from a four-door 3 Series? The answer is as plain as the nose on this car’s face.

BMW’s head of design, Adrian van Hooydonk, has been expanding the brand’s signature ‘kidney grille’ in every conceivable direction, and this is the much talked about interpretation adorning all 4 Series models (petrol, hybrid and electric) as well as the M3 sedan.

The new Gran Coupe is longer, wider, and taller than the outgoing model, and the track is broader, front and rear. The wheelbase has also been extended, now a whole 5.0mm longer than the 3 Series.

The DRLs and headlight main beams are LED with laser high beams, immense gills square up the edges of the front clip, while a vent and the strake attached to it stand the car apart. Plus, of course, the doors are frameless. 

One niggle, though. I’m not in love with the slender door handles. It’s hard to get a good grip on them, especially in the wet. 

Standard 19-inch alloy rims are shod with Pirelli P Zero rubber 245/40 fr / 255/40 rr), the roofline slopes distinctly towards the rear, a lip spoiler on the trailing edge of the tailgate is classic BMW, darkened LED tail-lights wrap around the rear corner, and a diffuser-type panel is flanked by large exhaust apertures.

Our car’s ‘Aventurine Red’ finish is a $3850 option, but to my eyes anyway it looks superb.

Exterior trim including the grille frame, front air intake inserts, mirror upper housing, model designation badges, and tailpipe are finished in ‘Cerium Grey’, which I reckon 99.9 per cent of people will see as black. 

The interior will be familiar territory for any current BMW owner, the 12.3-inch digital instrument screen sitting in a compact, hooded binnacle, and partnering with a 10.25-inch multimedia display standing proud of the dash above the broad centre stack. 

The seats are trimmed in top-shelf leather with blue contrast stitching, plus the grippy sports wheel is also wrapped in genuine hide.

BMW calls the finish on the main buttons and controls ‘Galvanic’ which translates to a slick silver metallic look and feel. Configurable ambient interior lighting is a nice touch, and the broad console enhances the driver-focused feel, with a sprinkling of carbon-fibre around the centre console and dash lifting the sense of occasion.

Overall, the interior feels clean and classy with an obvious attention to detail.  

Yes, yes - eye of the beholder and all that business. But for mine, the RC looks terrific. We cycled through two models, the RC350 and the performance-focused F Sport, and both cut a fine and athletic figure on the road.

Front on, the pincered grille dominates the view, sweeping back into bonnet, and stretching to the lowest corners of the front end, while a flared-lip body kit runs the length of the body. Special mention also goes to the cat-claw swipes that live behind the rear wheels.

The regular RC models make do with twin exhaust tips, while the F Sport range scores quad pipes, separated by a slinky rear diffuser, and the rear spoiler is an integrated lip that forms part of the boot. Cooler still, the Carbon Edition adds lightweight elements, like a carbon-fibre roof panel and an active rear wing - with about 6.6kg shaved off the kerb weight.

Climb inside, and you'll find a quality - if slightly dated interior - with soft leather seats, carbon-effect trim elements and a new, 10.3-inch screen in the centre of the dash.

As you can see from our interior photos, though, some elements do now feel a little behind the times. The door panels feel harder than I'd like, almost as if a thin-piece of leather has been stretched over hard plastic, and the control unit in the middle of the cabin is awash with hard black plastic, and the knobs mounted on it feel a touch cheap and non-premium, too.

At close to 4.8m long the 4 Series Gran Coupe is a sizeable machine. Up front, the feeling is airy and comfortable, and the rear is surprisingly spacious, especially in light of the car's sloping roofline.

At 183cm I have to fold myself tightly to fit under the low roof, but once inside I have enough room to sit behind the driver’s seat set for my position with more than enough legroom and adequate headroom. Put three full-size adults across the back row, though, and there will be breathing difficulties.

Kids will be fine, however, and individual vents with adjustable temp in the rear was a big plus during a particularly hot test week.

For storage there are generous door bins in the front with room for large bottles, a decent glove box, dual cupholders in the centre console, a reasonable lidded bin (which doubles as a centre armrest), and the wireless device charging bay (forward of the gearshift) makes a handy oddments space when not in use.

In the rear, again the doors feature pockets with room for (medium-size) bottles, there’s a fold down centre armrest with two cupholders, but thanks to the one-piece shells on our test car’s optional M Sport front seats there are no map pockets.

Power and connectivity runs to a USB-A socket and a 12V outlet in the front centre console, as well a USB-C port in the front storage bin, a pair of USB-Cs in the rear, and a 12V outlet in the boot.

Speaking of which, lift the tailgate and with the rear seat upright we were able to fit all three of our suitcases or the beefy CarsGuide pram into the healthy 470-litre (VDA) boot space.

Lower the 40/20/40 split-folding rear seat down and 1290 litres of volume is at your disposal. Plus there are handy bag hooks and tie-down anchors to help secure loose loads.

You can also tow a braked trailer up to 1.8 tonnes (750kg unbraked), but don’t bother looking for a spare of any description, a repair/inflator kit is your only option.

Now look, if you see a future filled with trips to Bunnings or ferrying the troops to soccer training, the RC is not for you. It's a two-door, four-seat coupe - and those two rear seats couldn't be less helpful for adult-sized humans if they'd been painted on.

Its dimensions measure 4695mm in length, 1840mm in width and 1395mm in height, but most of that space is focused on the front-seat riders, where your surrounds feel sporty-snug, but not claustrophobic.

Up front, that cursed mousepad control system is still in full flight, but the screen it controls is now bigger. There are two cupholders to be shared between front-seat folks, as well as the usual compliment of USB and 'aux' connections. And even a CD player, for that matter.

Climb into the back, which is no easy task in and of itself, and you'll find the space cramped for anyone but kids. But while it's tiny, it's clever. Deep cut-outs in the rear of the front seats mean more room for your legs. Headroom, however, is a problem, and my (I'm 176cm) head was touching the roof.

There are two cupholders, at least, but - surprisingly - little in the way of entertainment connections. You will find an ISOFIX attachment point in both of the rear seats.

The boot opens to reveal a fixed 423 litres of space, which is handy enough for weekends away. Predictably, though, extra practical accessories are fairly limited - you can forget optional roof racks.

As it is with most of the Lexus range, the RC model comparison is pretty straightforward. You need to pick your engine (300 or 350) and then choose your trim level (how much you want to pay), be it Luxury, F Sport or Sports Luxury. Only the RC F model line differs, because here you can choose from the base RC F trim, or the more expensive RC F Carbon.

Engine and kit aside, the RC family is the same basic set-up; four seats, two doors and coupe styling. The rest, then, depends on your intended price range.

Entry-level Luxury cars - $65,400 for the 300, $68,400 for the 350 - arrive with 18-inch alloy wheels, LED headlights and fog lights, leather trim, standard  navigation, heated and ventilated front seats, dual-zone climate and keyless entry with push-button start.

Step up to the F Sport Trim - $74,700 for the 300, $77,700 for the 350 - and you'll get bigger 19-inch alloys, a better Mark Levinson stereo and rain-sensing wipers.

Finally, the Sports Luxury models - $84,900 for the 300, $87,900 for the 350 - get better seats, some fancier cabin furniture and a moonroof. All the RC models get a new 10.3-inch screen (but no Apple Car Play/Android Auto).

Step up to the the V8-powered RC F models - $138,100 for the base model, $152,300 for the RC F Carbon - and you'll add adaptive variable suspension and an improved safety package that we'll come back to under the Safety sub-heading. The Carbon variant - predictably - gets a carbon-fibre roof panel, active rear wing and some carbon-fibre interior trim elements.

On the colour palette, the regular RC range is available in 'Sonic Quartz' (white), 'Mercury Grey', 'Premium Silver', 'Sonic Titanium' (another silver), 'Onyx' (black), 'Graphite Black' and 'Infrared' (red). The performance-flavoured RC F cars nab some extra choices, including 'Cobalt Mica' (blue), 'Lava Mica' (orange) and the brand's new hero colour, 'Zinnia Yellow'.

A moonroof (or sunroof) is standard fit on the RC F models, as well as the Sports Luxury trim, while it's a cost option on the cheaper cars. Speaking of which, you'll find all sorts of goodies in the accessories catalogue, including unique floor mats.

Each price listed is the RRP, of course, so you'll be paying more in on-road expenses. But you knew that already, right?

Under the bonnet is BMW’s (B58) all-alloy 3.0-litre twin-scroll turbo intercooled, in-line six-cylinder engine, driving all four wheels via an eight-speed automatic transmission and electronically controlled clutch pack, as well as an electronic limited-slip differential at the rear.

It features high-pressure direct-injection and BMW’s ‘Valvetronic’ system managing air flow to the intake side, to produce 285kW at a relatively high 5800-6500rpm. But the big punch is 500Nm of peak torque from just 1900rpm all the way to 5000rpm.

The M440i is also a mild-hybrid with a 48-volt starter motor-generator and supplementary battery able to give an 8.0kW kick at low engine speeds.

The more you spend, the more you get. Spring for the 300, and you'll find a 2.0-litre turbo engine nestled under the bonnet, good for 180kW at 5800rpm and 350Nm at 1650rpm. It pairs with an eight-speed automatic, and shuffles power to the rear wheels.

Step up to the 350-badged cars and your engine specs improve accordingly. You'll now find a 3.5-litre V6 motor providing the horsepower, good for 232kW at 6400rpm and 380Nm at 4800rpm. The gearbox (eight-speed auto) remains the same, and the power is still sent to the rear axle.

The pick of the power bunch, though, is the 5.0-litre V8 engine nestled in the RC F cars. It'll fire 351kW at 7100rpm and 530Nm at 4800rpm toward the rear wheels - more than enough to shift the 1820kg (tare) weight. It's paired with an eight-speed automatic, or what the Lexus spec sheet refers to as a "Sports Automatic".

There is no AWD or manual transmission option anywhere in the range, and for specific oil type etc, consult your owner's manual.

BMW’s official fuel economy figure for the M440i xDrive Gran Coupe, on the ADR 81/02 - urban, extra-urban cycle, is 8.2L/100km, the 3.0-litre turbo six-cylinder emitting 187g/km of C02 in the process.

Stop/start is standard, and we saw an average of 11.1L/100km over city, B-road and freeway running during a week with the car.

With the 59-litre tank brimmed (with minimum 95RON premium unleaded) that real-world test number translates to a range of around 530km.  

Let's start from the top, shall we? There is a price to pay for power, and the V8-powered Lexus arrives with its claimed 10.9L/100km on the combined cycle. That's quite a lot, and it's a number that will surely only worsen if you drive the RC F the way that you really should drive it.

Things improve with the 3.5-litre capacity engine, recording 9.1L/100km on the same cycle, while the 2.0-litre engine will return 7.3L/100km.

There is no diesel engine anywhere in the range, and the fuel-tank capacity across the board is 66 litres, with 95RON fuel required.

BMW says the M440i xDrive Gran Coupe will accelerate from 0-100km/h in 4.7sec, and I reckon the threshold for a properly quick car is sub-five seconds.

The 3.0-litre turbo six develops its peak power of 285kW between a relatively lofty 5800-6500rpm, but the big number is a solid 500Nm punch of pulling power delivered between 1900-5000rpm.

Squeeze the throttle pedal pretty much anywhere in the rev range and the response is glorious. Rapid acceleration accompanied by raucous engine noise and rorty exhaust note (albeit with some synthetic support). Various pops and bangs in the Sport settings add extra entertainment.. 

The eight-speed auto gets some electric support from the mild-hybrid system to fill the torque gap on up shifts, and the result is a conventional torque-converter transmission that behaves like a dual-clutch.

Shifts are seamless in general driving, and satisfyingly quick in a more aggressive mode, the wheel-mounted paddles dialing up the fun in manual changes. 

Suspension is double wishbone front and multi-link rear with the standard ‘Adaptive M Suspension’ built around an adaptive damper set-up.

The change between the ‘Comfort’ setting to the ‘Sport’ or ‘Sport+’ calibration is close to instant and makes a discernible difference, especially in terms of ride comfort.

I found the best ‘Individual Sport’ arrangement to be damping in Comfort, with the steering engine and transmission in Sport. The car flows so beautifully through corners with urgent response from the powertrain.

By all means dial up the suspension if you’re having a real crack, but the car feels superbly balanced, stable and predictable in Comfort (front to rear weight distribution is 50:50).

The electrically-assisted variable-ratio steering is nicely weighted with good road feel, and the grippy sports steering wheel is a nice point of contact.

The xDrive AWD system’s default setting is rear-biased, although it will push most of the drive forward when required. But the RWD feel is unmistakable. 

The M440i weighs in at around 1.9 tonnes but feels lighter and more nimble than that figure would typically indicate.  

A standard electronically-controlled M Sport limited-slip differential puts the power down confidently. I have a favourite LSD test corner on my regular evaluation drive, a sharply twisting and rising left-hander.

Rolling into it in a low gear before planting the throttle mid-corner, the car simply hunkers down without a hint of fuss (or traction loss) as it rockets out the other side.

Optional M Sport front seats ($2000) provide comfort and firm location in equal measure and in terms of ergonomics BMW knows how to focus on the driver and set-up an efficient environment. Key controls are perfectly positioned and simple to operate.

I have an issue with the ‘Lane Departure Warning’ function, however, which is too quick to intervene and overly intrusive when it does so. I turned the ‘Steering Intervention’ function off. You can dial down steering wheel vibration warnings, too.

The standard M Sport brakes feature big vented rotors front and rear, with fixed four-piston front calipers doing the bulk of the work. They’re strong but don’t bite or release too aggressively. It’s easy to grease in a smooth application. 

Having now spent a fair chunk of time behind the wheel of the V6 and V8-powered cars, we're ready to make a pretty bold claim: the six-cylinder engine is - and there's no other way to put it - simply more fun.

Shocking, I know, but there it is. There's effortless power on offer in the RC F models, of course, but it's the way that power is delivered that makes it feel like more of a loping grand tourer than a fire-breathing performance coupe.

For one, both the power and exhaust notes arrive in stages. So if you're gentle with the throttle - like you almost always are in the CBD or suburbs - it wafts around in near silence, the engine feeling anaesthetised, and like it's only using a tiny proportion of its available oomph.

The V6 engine just feels sportier. It's still not super emotional, but I think it reacts to inputs quicker.

Leave your foot buried, however, and the character transforms, the exhaust booming into life and that big V8 finally unlocking its prodigious power. With the adaptive dampers (no air suspension) set to the sportiest setting, it sits flat in corners, with nary a roll through the body. And while there isn't an intimate connection with the road below, nor masses of feedback through the steering, it does acquit itself well on the bends.

But... the V6 engine just feels sportier. It's still not super emotional, but I think it reacts to inputs quicker, and comes alive a little lower in the rev range than the big V8. It doesn't really matter if you're in Normal, Sport or Sport+, it just feels more vibrant. Hell, you can even get the traction light flashing if you're particularly silly with the accelerator.

And as such, it's our pick of the bunch. Sure, it can't match the outright performance of the V8, nor the speed of its 0-100km/h acceleration time, but it puts a bigger smile on your face in normal, day-to-day driving. And let's face it, that'll be 90 per cent of the time you spend behind the wheel.

Standard safety across the RC includes dual front and front-side airbags, as well as front airbags for the second row. You'll also find a knee airbag for both driver and front-seat passenger. Forward-collision warning with AEB (and pedestrian protection) is standard fit, too, and so are front and rear parking sensors and a parking camera.

F Sport and Sports Luxury-badged cars add blind-spot monitoring and rear cross-traffic alert, along with lane-departure warning and lane-keep assist. The RC F and RC F Carbon both get radar cruise control and an active lane-departure system included in the standard offering.

The Lexus RC range is yet to be crash-tested by ANCAP, and so is yet to receive an Australian safety rating.

The M440i Gran Coupe is covered by BMW’s three-year/unlimited km warranty (including paintwork), as well as 12-year/unlimited km anti-corrosion (perforation) cover. 

That’s off the premium market pace now with Genesis, Jaguar, and Mercedes-Benz at five years/unlimited km and Lexus set to join them from January 1st, 2022. 

That said, roadside assistance is provided for the duration of the main warranty, but it’s worth noting “rattles and squeaks” are only covered for one year.

Service is condition-based, the car telling you when maintenance is required, and a range of service packages are available. The basic plan covering a 4 Series for five years/80,000km comes in at $1750. 

The RC range is covered by a four-year/100,000km warranty, with service intervals pegged at 12 months/15000km. There is no capped-price servicing program on offer, but Lexus will guarantee you a loan car every time your vehicle is in the shop, and will even come to your house or workplace to collect - and drop-off - your car.

For any owner-reported reliability problems, keep and eye on our Lexus ownership page.