BMW 428i vs Lexus RC350

What's the difference?

The 4 Series line offers three distinct points of difference from the more traditional 3 Series, each with their own attraction. The sharpening of the sticker prices and the additional spec helps their cause as well, with the 430i Coupe probably our pick of the range. The 440i is the firecracker of the group, while the 420d is also worth a look, thanks to its value and prodigious torque output.

If you’re a buyer that thinks with their head, the RC 350 F Sport is the obvious choice when compared to its direct rivals.

After all, it looks great (at least to these eyes), feels luxurious in more ways than one, and is unrivalled when considering value-for-money.

But, if you think with your heart instead, it’s clear it is isn’t on the same level dynamically and therefore doesn’t feel as sporty to drive as its name suggests.

So, don’t let its sports car classification fool you, the RC 350 F Sport is more of a grand tourer, or a comfortable cruiser, to be precise, and an underrated one at that.

No external changes to the 4 Series' bodywork have been affected  for  this midlife refresh, but there have been plenty of tweaks to the standard equipment offerings right across the board.

Looking at the RC 350 F Sport, it’s hard to imagine how it became so anonymous on the road, whether you love it or hate it.

Up front, its striking design simply cannot be ignored, with its unique mesh 'Spindle' grille insert demanding attention.

Either side of it are the LED headlights and boomerang-style daytime running lights, which, again, cannot be missed.

Around the side, the RC 350 F Sport has all the hallmarks of a classic coupe, including a swoopy roofline, and looks all the better for it.

The 19-inch alloy wheels wrapped in a mixed set of Bridgestone Potenza tyres are particularly arresting thanks to their sporty 10-spoke design.

That said, the rear end is arguably the RC 350 F Sport’s best angle, at least universally, thanks to its crisp LED tail-lights and chunky bootlid.

The bumper below is also a looker, even with its fake side air intakes, while its diffuser insert is flanked by a pair of chrome exhaust tailpipes.

Inside, the RC 350 F Sport isn’t quite as good, with most of our criticism directed at the 10.3-inch central display, which is powered by an average multimedia system made worse by an incredibly fiddly touchpad controller. The physical shortcut buttons on hand are but small mercies.

Thankfully, Apple CarPlay and Android Auto support is now standard, so a better user interface is literally in your pocket… but you still don’t have a touchscreen to work with.

The RC 350 F Sport’s button-controlled 8.0-inch digital instrument cluster is much better, even if it’s more like a multi-function display due to its limited functionality.

While the centre stack and console designs are undoubtedly showing their age, there’s no doubting this is a premium model thanks to the selection of high-quality materials used throughout the cabin.

In our test vehicle, black leather-accented upholstery with (very cool) 'Tuscan Sun' yellow accents, piping and stitching covers the sports steering wheel, gear selector, sports seats, armrests, door inserts, knee rests and the instrument cluster. So, almost every touch-point.

Pleasingly, soft-touch plastics are used for the upper and middle dashboard as well as the door shoulders, with hard plastics only found on the lower dashboard, door bins and rear seat divider.

As per other Lexus models, the RC 350 F Sport has nice rose-gold accents on its steering wheel, gear selector, front air vents and centre console, while specific Naguri aluminium trim adorns its dashboard and door inserts. And there are also steel pedals.

Two-doors are never the most practical devices, but the 4 Series Coupe and Convertible duo make a decent fist of it for front-seat passengers. There are bottle holders in both doors and a pair of cupholders in the centre console, along with a large lockable glovebox.

The centre bin is, however, quite shallow, and houses the car's single USB port inside it. There is covered storage under the dash for smaller items, and a small rubber-lined tray that the current crop of phones has outgrown.

The rear seating in the Coupe is reduced to almost a formality, especially if the front seat passengers are tall and the front seats are set back, while the sloping roofline reduces head space quite considerably. A centre armrest contains a pair of cupholders, and there are small side pockets.

Rainy conditions precluded us from trying the Convertible's metal folding roof, but the rear seat space restrictions also apply here. Its 370 litres of boot space is roomy enough for a drop-top, while a clever lifting function raises the folding roof structure up by about 300mm to allow luggage to be stowed under the panels when the roof is down. Capacity drops, though, to just 230 litres.

The Gran Coupe, on the other hand, is the most practical car in the entire 3 and 4 Series line-up outside of the 3 Series Touring wagon. With a large, flat load area, and a hatch-like tailgate, the Gran Coupe can swallow 480 litres of gear with the seats up and an impressive 1300 litres with the seats lowered.

Face-level rear vents, more head and backseat legroom – not to mention the fact you don't have to squeeze into the rear past the front seat – makes the Gran Coupe a most useful device, and it's little wonder it's the most popular variant of the three.

Hope you’re not expecting the RC350 F Sport to be the first word in practicality, because it’s not.

Measuring 4700mm long (with a 2730mm wheelbase), 1840mm wide and 1395mm tall, the RC350 F Sport is a decently sized coupe, but that doesn’t mean it’s spacious. Hell, it’s hard to get into it the first place, let alone out.

We are of course referencing the token second row, which is cramped at best. In fact, behind my 184cm (6.0ft) driving position, there is no toe-room nor headroom. Yep, if you’re around my height or taller, get used to burying your chin into your chest.

Thankfully, legroom is better but still limited to less than two centimetres, while foot space is compromised by the unusually tall transmission tunnel. And in case you were wondering, even the first row is on the tighter side.

Beyond the central air vents, you’d think rear occupants would be cheered up with cupholders, a fold-down armrest and USB ports at the very least. Well, they don’t get any of that, with a couple of coat hooks the only amenities on offer.

And don’t forget that being a four-seater, there are only two seats in the second row, so this is definitely not a ‘family car.' That said, there are two ISOFIX and two top-tether anchorage points for child seats, so you can theoretically take a couple of younglings with you on a trip.

In-cabin storage options are very limited, with the glove box small in size and mostly taken up by the manual, while the central bin is useable but somewhat occupied by two USB-A ports, a 12V power outlet, and an auxiliary input.

And whatever you do, only bring up to two drinks with you, as beside the pair of cupholders next to the gear selector, there is no other place to officially store extras. Yep, the front door bins are only good for storing very short and narrow items.

The boot is a different story, with a decent 374L of cargo capacity, and it can be expanded by stowing the 60/40 split-fold rear bench, an action that can annoyingly only be performed in-cabin via the manual release latches.

That said, the boot’s tall load lip makes unloading bulkier items a little trickier, while getting them onboard in the first place is complicated by its wide but short aperture. At least there are four tie-down points on hand to secure loose loads?

Priced from $78,636 plus on-road costs, the RC 350 F Sport commands $3000 and $8000 premiums over its lower-output RC300 and lower-spec Luxury siblings.

In terms of rivals, the RC 350 F Sport significantly undercuts the best-selling Mercedes-Benz C 300 Coupe ($89,000) but is about on par with the Audi A5 40 TFSI Sport Coupe ($78,900).

Standard equipment not already mentioned in the RC 350 F Sport includes rain-sensing wipers, power-folding side mirrors, satellite navigation with live traffic, digital radio, an 835W Mark Levinson sound system (with 17 speakers), keyless entry and start, dual-zone climate control, power-adjustable front seats with heating and cooling, a power-adjustable steering column and an auto-dimming rearview mirror.

Yep, it’s loaded, which is very good news. What isn’t, though, is its foot-operated park brake. Sure, the RC is six years old, but electric park brakes were well and truly a thing in 2014, so it’s quite an annoying quirk.

The RC 350 F Sport only has two options: a $2500 power-operated sunroof and $1500 premium paintwork, both of which were fitted to our test vehicle, with the latter taking the form of 'Graphite Black.'

There are two new petrol engines, two new badges and prices cuts of up to $10,000 right across the board for the line-up, along with additional standard equipment that improves the value equation even further.

The line kicks off with the 420, which can be had in either diesel or petrol guise. The 420i gains BMW's new B48 2.0-litre four-cylinder turbo petrol engine, which gains 5kW over the old motor to produce 135kW and 270Nm.

It also benefits from slightly improved fuel economy, with a drop of 0.3 litres per 100km for the Coupe and 0.5 for the Gran Coupe to 5.8L/100km, and a fall of 0.2L for the Convertible to 6.2L/100km.

The 420d retains its 140kW, 400Nm 2.0-litre four-cylinder turbo diesel engine, which returns 4.3L/100km in the fixed roof cars and 4.7L/100km for the Convertible.

The 430i – formerly known as the 428i – also receives the new 2.0-litre petrol engine, albeit in a 185kW/350Nm tune. Its fuel economy drops a healthy 0.6L for the Coupe and Gran Coupe and 0.4L for the Convertible, posting figures of 5.8 and 6.3L/100km respectively.

The top-spec 435i has been transformed into the 440i with the addition of BMW's new Twinpower 3.0-litre straight six petrol motor. Its output jumps 15kW to 240kW and by 50Nm to 450Nm, and its consumption falls by more than half a litre to 6.8 litres per 100km for the closed-roof pair and 7.2L/100km for the Convertible.

All cars come standard with a 'traditional' ZF eight-speed torque converter automatic transmission with steering wheel paddles as standard fitment, while a six-speed manual gearbox is a no-cost option across the line.

The RC 350 is motivated by a lusty 3.5-litre naturally aspirated V6 petrol engine that produces 232kW of power at 6600rpm and 380Nm of torque from 4800-4900rpm.

For reference, the RC 300 uses a 2.0-litre turbo-petrol four-cylinder unit that develops 180kW at 5800rpm and 350Nm from 1650-4400rpm.

Either way, these outputs are exclusively sent to the rear wheels via a well-sorted eight-speed torque converter automatic transmission with paddle-shifters.

This combination helps the RC350 sprint from a standstill to 100km/h in about 6.1 seconds while on the way to its electronically limited top speed of 230km/h.

Our brief test loop on a rainy, blustery Melbourne winter's day in all three model types (but no diesel) netted varying fuel consumption readings across the line; we recorded 8.4L/100km in a 420i sedan against a claimed figure of 5.8, 9.8L/100km for the 430i Gran Coupe against a claimed figure of 5.8L/100km, and 8.4L/100km against the 440i Gran Coupe's 6.8L/100km.

The RC350’s fuel consumption on the combined-cycle test (ADR 81/02) is 9.1 litres per 100 kilometres, while its carbon-dioxide emissions are 212 grams per kilometre, but both claims are a little keen.

In our real-world testing, we averaged 12.2L/100km, which is far cry from the above, given our result came from 180km of driving that was heavily skewed towards highway stints over city traffic.

For reference, the RC 350’s 66L fuel tank takes 95 RON premium petrol at minimum.

BMW introduced a raft of tweaks to the 3 Series platform late last year, which have translated over to the 4 Series. The key addition across the line is BMW's two-stage adaptive dampers that feature a Sport and a Comfort circuit, fitted as part of the M Sport pack that comes standard on the 430 and 440, and is a $2600 option on the 420.

Larger 19-inch rims are fitted to the 430i and 440i cars, while the 420 gets 18s out of the box. It's possible to fit 18s on the more expensive cars, as part of the no-cost Luxury option pack that supplants the standard M Sport pack.

While our test was brief and held in less than ideal road conditions, the large-wheeled 4 Series really didn't enamour themselves to this author. There's a distinct lack of communication from the tyres and chassis through the steering wheel and your backside, while the combination of firm Sport shocks and large 19-inch wheels with narrow-section tyres made for an uncomfortable ride over country roads.

Sampling a 420i with the Luxury 18-inch rims, however, improved things immensely, with much better feedback and comfort that didn't come at the expense of handling.

One of BMW's strong points should be its steering, given all the 3 and 4 Series cars are still rear-wheel-drive… but it's not, unfortunately. The electrically assisted set up is far from perfectly calibrated, feeling too dull and digital underhand, no matter what the setting.

The pick of the bunch performance wise is – logically – the six-cylinder 440i. The turbo powerplant is potent from right down the rev range, with a muted yet still pleasing engine note permeating the cabin. The self-shifting mode on the eight-speed auto does a good job of keeping up as well.

The updated 2.0-litre four is a sprightly performer, too.

The RC350 F Sport is actually pretty good to drive – so long as you understand what it’s about.

Think of it more as a comfortable cruiser than a sports car and you’ll forgive it for some of its shortcomings. Yep, it is that relaxing to drive.

While the F Sport’s suspension (independent double-wishbone front and multi-link rear axles with adaptive dampers) does have a sports tune, it still serves up a comfortable ride on most surfaces.

Naturally you can play with the five drive modes (Eco, Normal, S, S+ and Custom) on hand to increase its stiffness and therefore improve handling, but the difference between soft and ‘hard’ is negligible, so don’t bother.

Either way, the F Sport does have a noticeable habit of picking up sharper road edges, such as nasty potholes, and it's particularly prevalent at the rear. That said, it doesn’t detract from its luxuriousness all that much.

Where the sportiness really comes to the fore, though, is via the F Sport’s electric power steering system, which has a variable ratio.

As well-weighted as this set-up is as standard, you’ll find it hard to forget how sharp it is on turn-in. Among several factors at play, the obvious one is the F Sport’s rear-wheel steering system, which is better executed than most.

This technology turns the front wheels in the opposite direction to the rears at lower speeds but in the same orientation at higher velocities.

The result of the former? A mid-size coupe that feels like it has a short wheelbase, with the improved manoeuvrability especially noticeable in car parks. Conversely, the latter lends itself to greater stability when you need it.

And it’s a good thing it is the way it is, because the RC 350 F Sport has a kerb weight of 1740kg, which is not exactly sports-car light. This heft is a felt when cornering hard, even though body control is pretty strong overall.

Handling performance is also enhanced by the rear Torsen limited-slip differential, which helps improve grip upon corner exit, at which point the RC 350 gets to show off its straight-line abilities.

The V6 engine is buttery-smooth, but you really need to stick the boot in to fully enjoy it, with it only really starting to come alive when engine speeds are above 3000rpm.

That said, it’s easy to appreciate this character trait around town, where the RC 350 is truly unfazed. Take it onto the open road, though, and acceleration is more than pleasing.

The automatic transmission is a great dancing partner here, serving up delightfully smooth gear changes. It’s also surprisingly responsive, perhaps too responsive, as it can be quite fussy in city traffic, shuffling up and down ratios in quick succession.

Biggest gripe, however, is the digitally enhanced sound the RC 350 produces. Sitting inside, the noise being pumped in is satisfying, but you can’t help but acknowledge the aural deception at play.

Neither ANCAP nor Euro NCAP have issued a safety rating for the RC range, although the mechanically related IS line-up received the maximum five stars in 2016.

Advanced driver-assist systems in the RC 350 include autonomous emergency braking (with pedestrian detection), lane-keep assist, blind-spot monitoring, rear cross-traffic alert, adaptive cruise control, a (low-resolution) reversing camera and front and rear parking sensors. Yep, the only major thing missing here is steering assist.

Other standard safety equipment includes eight airbags (dual front, side, curtain and knee), anti-lock brakes (ABS), electronic brakeforce distribution (EBD), brake assist (BA) and the usual electronic stability and traction control systems.

BMW offers a Service Inclusive program at the time of purchase, which for $1340 covers everything – including items like spark plugs, brake fluids and other fluids - for five years or 80,000 km scheduled. The cars are also covered by a three-year free roadside servicing program, in addition to BMW's two year, unlimited kilometre warranty.

As with all Lexus models in Australia, the RC 350 comes with a four-year/100,000km warranty and four years of roadside assistance. Both offers are a year behind that of fellow premium brands Mercedes-Benz and Genesis.

The RC 350’s service intervals are every 12 months or 15,000km, whichever comes first. A three-year/45,000km capped-price servicing plan is available, costing $495 per visit, which is not too bad at all.