Infiniti Q50 vs Nissan 370Z

What's the difference?

The Q50 Red Sport is a premium sedan that's great value, with a cracker of an engine. While Infiniti has improved the ride and steering, it still feels to me that the engine is too powerful for the wheels and chassis to handle. But if you're looking for something of an untamed beast, this car could be for you. Just don't say we didn't warn you.

It's hard not to be ageist when it comes to the current Nissan Zed, because 15 years in market (nine if we're generous) is a lengthy stretch in anyone's book. But somehow the 370Z is more than the sum of its parts. It has fantastic front-engine/rear-drive balance, an increasingly rare atmo engine, and a beautiful manual 'box. The value equation is decent, and it's nicely put together. Just don't expect to be dazzled with the latest safety, driver-assist and multimedia technology.

The Q50 Red Sport looks cranky from front on, which I like in a car. Yes, the grille is simplistic and gaping, the nose is a bit bulbous, and sure, side on the car looks like a Lexus IS 350, but those rear haunches and the aggro body kit with its front splitter and boot lid spoiler make for an impressive looking four-door sedan.

The update brought restyled front and rear bumpers, those red brake calipers and the dark chrome 20-inch rims and new LED tail-lights.

Inside, the cabin is an asymmetrical paradise (or hell, if you're a bit OCD like me) full of sweeping lines, angles, as well as different textures and materials.

The red stitched quilted leather seats are an addition that came with the update, so is the new steering wheel and the ambient lighting.

The 'Sunstone Red' colour of our test car is also a new hue which looks a bit like Mazda's Soul Red. If red is not you, there are other colours – hope you like blue or white or black or grey because there's 'Iridium Blue', 'Midnight Black', 'Liquid Platinum', 'Graphite Shadow', 'Black Obsidian', 'Majestic White' and 'Pure White'.

The Q50 has similar dimensions to the IS 350: both are 1430mm tall, the Infiniti is 10mm wider at 1820mm,  120mm longer at 4800mm, and has a wheelbase that's 50mm longer at 2850mm.

If you want to go all the way back, the 370Z clearly takes its design direction from Datsun's star of the '70s, the original 240Z.

Inspired by Ferrari, and (along with the Toyota 2000GT) a sports-car breakthrough for the Japanese industry, the first Zed's front-engine, long-nose proportions have remained largely intact in successive iterations over the decades.

With a broad, flat nose, distinctively jagged headlights, and steeply raked rear profile, there's no mistaking the 370's signature stance, with pumped-up guards sitting over fat, 19-inch alloy rims.

Sharp-eyed car-spotters will notice the update's new design RAYS forged wheels, smoked front and rear lights, and a similar smoked finish on the exterior door handles.

A new colour, 'Cherry Red' also replaces 'Bordeaux Black' in an eight-shade colour palette. Our test example was finished in 'Gun Metallic'.

Inside, echoes of Zeds past abound, with a trio of hooded gauges (clock, voltmeter, oil temp) sitting in the centre of the dash top, and the tachometer in the middle of a cowled, three-instrument main cluster shaded by an exaggerated tube.

And aside from consciously retro design touches, some elements have been present inside the car for so long they're just... ancient.

For example, old-school orange graphics for the odometer, gear position and trip computer are dated, and the small (7.0-inch touchscreen) multimedia display has the feel of an early noughties edition of Tekken 6.

Forget a digital speedo or head-up display. A CD slot still sits proudly in the centre stack, and matt silver highlights scattered around the cabin are as on-trend as double denim.

And the steering wheel (joined with the instrument binnacle) adjusts for height, but annoyingly, not reach.

That said, friends and family who rode in the car during the week I had the keys all commented on the swoopy exterior and cozy cockpit feel of the interior. So, what do I know?

The Q50 Red Sport is a five-seat four-door sedan and is vastly more practical than its two-door Q60 Red Sport sister, in that I can actually sit in the back seat. The Q60's coupe styling looks amazing, but the sloping roofline means headroom is so severely limited that it reduces the rear seats to a place to throw your jacket.

True, I'm tall at 191cm, but in the Q50 Red Sport I can sit behind my driving position with legroom to spare and more than enough headroom.

Boot space is good at 500 litres, which is 20 litres more than the luggage capacity of the IS 350.

Storage throughout the cabin is good with two cup holders in the rear centre fold-down armrest, two more up front and bottle holders in all doors. A large centre console storage bin and another big storage area in front of the shifter are great for keeping junk under control and your valuables covered.

Two seats means practicality is a relative term when applied to the 370Z. For example, getting in and out is an athletic exercise requiring gymnastic levels of flexibility and poise. As with most low-lying coupes, I found the outer hand on the A-pillar technique helps with swinging down into the car, or lurching up out of it.

Once ensconced behind the wheel, you're confronted with a relatively modest amount of storage space, running to a medium-size glove box, a lidded bin at the rear of the dividing console, a single cupholder, and door pockets incorporating recesses for small bottles only.

There are two lined recesses for soft bags or coats behind each seat, including a fold-out map pocket, but they're not exactly convenient for retrieving things when you're on the move. What's missing is a tray where you can easily stow things likes keys, coins or a phone.

There are also two 12-volt power outlets, a USB port and an aux-in audio connection.

Rear load space is limited to 195 litres, mainly due to the boot's shallow floor (an alloy space-saver spare sits underneath). It does incorporate a cargo blind and four tie-down hooks, but we only managed to squeeze in the largest (105-litre) suitcase from our three-piece hard set, or a combination of the two smaller ones (35 and 68 litres).

We also had a crack at stuffing in the CarsGuide pram (there is a top-tether hook provided for child seat fitment) and managed it with only a couple of beads of perspiration expended.

Forget the nappy-bag paraphernalia, though. The soft bags with all the baby stuff would have to go in the storage bays in the cabin behind the seats.

The arrival of the tricked-up 370Z NISMO in August last year, offered Nissan Australia an opportunity to reposition the regular model, dropping the MSRP for the manual version from $56,930 to $49,990.

Aside from adjusting the car's value-for-money proposition (and pissing off those who'd bought one in July), that close to seven grand haircut delivered more pricing headroom up to the Roadster (starting at $60,990), and NISMO (from $61,490) versions.

For that money the standard equipment list includes, keyless entry and start, cruise control, climate control air, go-fast alloy finish pedals, 'HDD' (Hard Disc Drive) sat nav with 3D mapping, a 7.0-inch colour multimedia touchscreen, and Bose eight-speaker audio with 9.3GB 'Music Box' hard drive.

You'll also pick up sports seats with lots of features. First, they're 'leather accented', which is code for genuine hide in all the places you regularly contact, and a faux equivalent everywhere else. Not uncommon, and not necessarily unpleasant. Then they're heated and four-way power-adjustable, (with manual lumbar and height adjustment for the driver).

The steering wheel and gear knob also cop the 'leather accented' treatment, plus you can expect LED DRLs and tail-lights as well as auto headlights. It's worth noting that the headlights are garden-variety xenons, and things you might expect in a $50k coupe, like, rain-sensing wipers, dual zone climate, Apple CarPlay and Android Auto connectivity or tyre-pressure monitoring are 100 per cent absent.

Lining up direct competitors for the 370Z isn't easy, because there aren't any. But the closest is arguably a 2.3-litre EcoBoost version of Ford's Mustang at $45,990 for the manual. A further stretch of the imagination could haul in the Mazda MX-5 RF ($43,890) or the 86 GTS+ ($39,440) and Subaru BRZ tS ($39,894).

Inside the Q50 Red Sport's nose is a 3.0-litre twin-turbo V6 petrol engine and it is a beautiful thing. To me this car is piece of technologically sophisticated jewellery that cradles a precious gem that pumps out 298kW/475Nm.

But I have my concerns... you can read about those in the driving section.

Shifting gears is a seven-speed automatic which delivers drive to the rear wheels.

The 370Z is powered by an all-alloy, 3.7-litre (VQ37VHR), naturally aspirated, quad-cam V6, producing 245kW at 7000rpm and 363Nm at 5200rpm.

Serving in a vast array of Nissan, Infiniti, Renault and Mitsubishi models, the VQ V6 engine series has been around in various displacements for over 20 years.

It features the 'Continuously Variable Valve Timing Control System' (CVTCS) with 'Variable Valve Event and Lift' (VVEL) on the intake side. And while all that may sound new and ultra-high tech, it was actually introduced in 2007.

Transmission choice is between a seven-speed auto (with manual mode and paddles) or six-speed manual gearbox, as tested here. And this 2018 upgrade brings a high-performance clutch from Japanese specialist Exedy.

Drive goes to the rear wheels via a carbon-fibre composite drive shaft, connecting with a viscous limited slip differential (LSD).

Additional features that won't necessarily be music to purists' ears include 'Active Noise Cancellation', and 'Active Sound Enhancement'.

The former monitors and measures engine sounds, using the audio speakers to produce "acoustically opposing signals to cancel undesirable sounds". So, okay, maybe filtering out the messy noise is a good thing.

But at the same time Active Sound Enhancement employs "digital signal processing to enhance the engine note, using the vehicle's sound system to augment or modify the spectrum of select powertrain sounds in the cabin". Yuck.

I can cop a tube that channels a bit of genuine engine noise into the interior, but in this context, the phrase 'digital signal processing' is a turn-off.

Infiniti says the V6 petrol engine in the Q50 Red Sport should use 9.3L/100km if you're using it on a mix of highways, urban streets and country roads. We only had the Q60 Red Sport for 48 hours and after a couple of days of Sydney city commutes and a trip to the Royal National Park our trip computer was reporting 11.1L/100km.

Claimed fuel economy for the combined (ADR 81/02 - urban, extra-urban) cycle is 10.6L/100km, the 370Z emitting 249g/km of CO2 in the process.

Over roughly 250km of city, suburban and freeway running, we averaged 15.6L/100km, at the bowser. Far from miserly.

Minimum fuel requirement is 95 RON premium unleaded, although Nissan says "for optimum performance" you should stump up for 98 RON. And just to rub it in, you'll need 72 litres of it to fill the tank.

Perhaps the biggest complaint we had about the previous Q50 Red Sport, which launched in 2016, was that it felt as though the chassis wasn't up to the amount of grunt running through it, and those rear wheels struggled to transfer the oomph to the road without losing traction.

We experienced the same issue again in this new car. I was breaking traction, not just in 'Sport+' and 'Sport' modes, but in 'Standard' and 'Eco', too. That was happening without pushing it hard and with all electronic traction and stability aids on.

If I was 18 I'd declare to the world I'd found my dream car - something that always wants to 'light 'em up' given half a chance. But like that one mate who always gets into trouble on a night out it's only funny when you're young.

A truly great performance car is planted, balanced and able to deliver the grunt to the road effectively. The Nissan R35 GT-R is the perfect example – a brilliant piece of machinery, a weapon of a performance car and with a chassis matched perfectly to its engine.

And that could be the issue with Q50 Red Sport - that engine feels overpowered for the chassis, and wheel and tyre package.

We also felt the previous Q50 Red Sport's ride, with its constantly adapting 'Dynamic Digital Suspension', was overly busy. Infiniti says it has developed the suspension system further and it does feel as though the ride is more comfortable and composed.

Steering was another area that we weren't overly impressed with when we drove the previous car. Infiniti's 'Direct Adaptive Steering' (DAS) system is super sophisticated and was the first in the world not to have any mechanical connection between the steering wheel and the wheels – it's all electronic.

The new Q50 Red Sport uses the upgraded 'DAS 2' and while it feels better than before, it's only in Sport+ mode that it seems most natural and accurate.

The Nissan 370Z is actually the car many want the Toyobaru 86/BRZ to be. I can sense some of you spluttering out a sweary response to that notion. But hear me out.

If you, like many others, think the 86/BRZ would be perfect with an extra 50kW/80Nm, just bolt on a turbo or supercharger, and voila. You'll get that extra grunt, but remember, the 86/BRZ was conceived to be light, tactile, and, not least of all, affordable.

Up the outputs and you light the wick on an engineering arms race that should also lead to bigger brakes, an engine with more exotic pistons and a tougher bottom end, a stronger gearbox and clutch, a beefier diff, sturdier chassis, fatter rims and rubber... the list goes on, and on. Until you end up with something very much like the spec, weight, and price of the 370Z.

That's not to say this car isn't a fun drive. It is. Just don't expect the quick reflexes of an MX-5 or 86/BRZ.

Despite light-weighting tricks like an aluminium bonnet and all-alloy suspension, the 370Z weighs in at a not inconsiderable 1467kg. And although its 3.7-litre V6 develops a solid 245kW/363Nm, first impressions are dominated by its hollow mid-range.

Much as I love the free-revving nature of a naturally aspirated engine, there's no denying a modern turbo typically delivers lots of torque low down, with peak power also available within a useful rev range.

All the action here is at the top end, with maximum torque arriving way up at 5200rpm, and peak power taking over at a nose-bleed 7000rpm (the rev ceiling is 7500rpm). Not exactly an easily accessible sweet spot.

The gearbox is a sweet reminder of what a pleasure it is swap ratios in a top-notch close-ratio manual.

But there's still so much to like about this evergreen Zed. Its classic front engine/rear-drive layout results in a 53/47 front to rear weight distribution and the car feels balanced and beautifully predictable.

Suspension is double wishbone front, multi-link rear, and ride comfort, even over choppy bitumen surfaces is surprisingly good. On the flip-side, rumble coming up from the Bridgestone Potenza RE050A rubber (245/40 f / 275/35 r) is always noticeable, and often intrusive.

The steering is supported by old-school hydraulic power assist and while connection with the front wheels is impressive, overall feel is light. Hello 'Merica.

The gearbox is a sweet reminder of what a pleasure it is swap ratios in a top-notch close-ratio manual, and hats off to Exedy for producing a wonderfully progressive clutch. Personal preference was to turn off the standard 'SynchroRev Match' function, because I like having a go at the ol' heel 'n' toe tap dance myself.

Brakes are ventilated front and rear with almost equal size rotors (355mm f / 350mm r) clamped by four-piston calipers up front and two piston units at the rear. They are reassuringly powerful and consistent.

Age has not wearied the 370Z's ergonomics. Although the lack of a digital speedo and no reach adjustment for the steering column is annoying, the sports seats are snug and comfortable, the moderately chunky wheel feels great, and all the major controls are simple to use. Who needs slick screens and 'piano black' finishes?

The 370Z must feel like a wall flower at the crash-test disco because it currently isn't rated for safety performance by ANCAP, its Euro NCAP affiliate, JNCAP in Japan, or the USA's NHTSA (National Highway Traffic Safety Administration) or IIHS (Insurance Institute for Highway Safety).

That said, in terms of active safety features you'll find ABS, BA, EBD, traction control, 'Vehicle Dynamic Control' (stability control), and a rear-view camera with 'Predictive Path' guidance lines.

But if you're looking for more current active tech, look elsewhere, because things like AEB, blind-spot monitoring, rear cross-traffic alert, active cruise, lane-keep assist, auto high beam or any kind of pedestrian detection are missing-in-action. They're not even available on the options list.

If all else fails and a crash is unavoidable, primary passive safety runs to active head restraints and eight airbags (driver and passenger front and side airbags, plus roof- and door-mounted curtain airbags).

The Q50 Red Sport is covered by Infiniti's four year/unlimited kilometre warranty with servicing recommended every 12 months or 15,000km.

Infiniti has a scheduled servicing program which will cost $1283 (in total) for three years.

Nissan offers a three year/100,000km warranty, which isn't exactly ground-breaking in the age of Kia's seven year/unlimited km commitment.

But it does include 24-hour roadside assistance for three years, and Nissan's 'myNissan Service Certainty' capped-price servicing program applies for up to six years/120,000km.

The scheduled maintenance interval is six months/10,000km, with charges ranging from a low of $283, to a high of $831 (100,000km), averaging out to roughly $428 per service.