Subaru Impreza vs Lexus Rx450H+

What's the difference?

The 2024 Impreza delivers on all the key things which have made the nameplate so well regarded for the last 30-odd years.

The issue is, buyer expectations have moved on. Hatchbacks need to do more than ever to compete with small SUVs, and with today’s fuel prices it’s far more valuable to offer hybrid rather than all-wheel drive.

This is why, despite the sixth-generation Impreza being a tidy high-tech offering with an admirable commitment to safety, I think it will ultimately continue to shrink its market share. This Impreza really is one for the fans.

The new Lexus RX450h+ Sports Luxury is packed with a wealth of premium features and strikes a solid balance between refinement and practicality. There are enough thoughtful touches that make everyday driving a little easier.

You’ll get the most out of the plug-in hybrid powertrain if you’re able to charge it regularly; ideally every day. That might not always be practical for busy people on the go, but overall, the RX450h+ manages to blend efficiency with Lexus’ signature comfort and quality.

Over the years the Impreza has changed in its design and intention so much.

Once known primarily for its sporty sedan variants, today’s Impreza is a far more contemporary hatchback, forgoing the once wagon-like shape for something with the traditional bubble silhouette to align with its rivals.

For better or worse, it also syncs up with the rest of Subaru’s range, with the brand’s current design language on full show, but it also barely evolves from the previous-generation version from the outside.

It trades the chunky square light fittings from the previous car for something a bit more refined this time around, with a similar look and feel to the WRX and Outback.

Inside also gets a similar fit-out to other Subarus in the range, complete with a raised centre console, shapely dash, and the same huge screen from the Crosstrek and Outback which dominates the space and helps simplify things compared to the busy interior and multiple screens of the previous car.

It’s a cosy space with chunky comfortable seats and the signature bumper car steering wheel is a stand-out bit of Subaru design.

Even the base car with its plastic trimmed wheel and basic cloth trims in the door is basic in an almost refreshing way, but unlike some rivals manages to be comfortable, too, thanks to soft trims for your elbows in the doors.

The RX isn’t breaking new ground with its plug-in hybrid design, but it still delivers that signature Lexus understated refinement.

The strong, flowing body lines, 21-inch alloy wheels and updated 'spindle grille' all give it presence without screaming for attention.

And in a segment where boxy and bulky designs tend to dominate, the RX’s swoopy silhouette helps it stand apart in all the right ways.

Inside, the cabin feels considered and luxurious. There's a heavy use of premium materials, including the leather and suede upholstery, plush soft-touch surfaces and the big, crisp displays that make the space feel modern and high-end.

The panoramic sunroof brings in loads of natural light, too, which is especially welcome given the dark headliner that might otherwise feel a little heavy.

If I have one gripe, it’s the thin steering wheel, which doesn’t quite match the otherwise solid, tactile feel of the rest of the interior. But overall, the cabin is a space that feels luxurious and well-executed. It's quietly confident, just like the RX.

Living up to the adventure-ready Subaru promise, the Impreza's interior is quite functional.

Even though many controls have moved to the big central screen, there are individual buttons for temperature adjustment and a permanent touch function for fan speed on the lower third of the screen.

It would be nice to see a full set of physical buttons for climate functions, but this seems like a decent compromise.

Elsewhere there are large bottle holders in each door with a small accompanying pocket, two more rigid bottle holders in the centre console, a small tray behind them, and a huge armrest console box.

Under the multimedia screen there is a bay with a wireless phone charger, but like the Crosstrek, it is finished in a hard plastic material, which means your phone will easy slide around and out of the charging area in the corners, which seems like an oversight.

Adjustability is great, even in the base car, with flexible seats and a wide range of movement for the wheel, letting you easily find a suitable seating position. Width in the cabin is okay, but headroom is excellent.

The back seat offers a solid amount of room for myself behind my own seating position, at 182cm tall, but the middle position is no good for an adult thanks to the presence of a large raise in the floor to allow for the all-wheel drive system underneath.

Amenities for rear passengers are only okay in the base car, with a large bottle holder in the door and a further two in a drop-down centre armrest. There are no adjustable rear air vents or USB power outlets in the L, but outlets are added in the R and S.

Boot space is on the small side, with only 291 litres (VDA) on offer. The high floor means a limited amount of space with the luggage cover in place, although I was surprised to find we could fit the full three-piece CarsGuide luggage set once it was removed, so long as you’re okay not being able to see out the rear window.

Under the floor, the Impreza sports a space-saver spare wheel - a must-have for long-distance regional travellers.

The RX cabin is thoughtfully laid out and impressively practical, with a premium feel that doesn’t come at the cost of everyday usability.

Up front, there’s plenty of space for driver and passenger, yet the stepped dash design brings a sense of intimacy. The electric front seats are seriously comfortable, with four-way lumbar support and extra adjustment functions that make this an easy choice for long drives.

Storage options are generous, too. There’s a clever dual-opening centre console, large glove box, multiple phone-sized shelves, map pockets and a couple of cup- and drink holders in each row.

Charging is taken care of by four USB-C ports, one USB-A port and a wireless charging pad.

Tech is up-to-date and well-integrated. The upgraded 14-inch media display looks crisp, supports wireless Apple CarPlay and Android Auto, and is paired with a revamped 12.3-inch digital instrument cluster and a colour head-up display.

The cluster’s new layout is modern and much easier to read than the previous offering. The digital rear view mirror also earns its keep when the cabin’s packed with passengers or gear.

One of my favourite touches? The seat controls on the side of the front passenger seat. It makes quick work of moving the seat forward, especially helpful when you’ve got a kid clambering in with a school bag full of projects.

Access to the rear row is easy, but the stadium-style seating, where you're perched noticeably higher than those in the front, won’t be for everyone.

That said, the rear seats are plush and padded, though they lack side bolsters, which rear passengers might notice during cornering.

Legroom is generous and the hardened kickplates are a dream to clean when your child’s treating the seatbacks like a climbing wall.

My eight-year old gives the back seat a glowing review, thanks to its creature comforts, including rear climate control, directional air vents, seat heating/ventilation on the outboard seats, two USB-C ports and retractable sun-blinds, which are a crowd favourite in our household.

There are three top-tether anchor points, and the bench is wide enough to fit three child seats, though bulky booster seats might be tricky due to the raised seating height.

At the back, the boot is well set up for families, offering electrically folding rear seats, a 12-volt socket, flat loading floor, and a hands-free powered tailgate.

Under the floor, there’s a small compartment for your charging cables (Lexus throws in two!) and a usable 612L of capacity when all seats are in use. One downside, though, is the lack of a spare tyre as you just get a tyre repair/inflation kit.

There are four variants in the RX range, and we’re testing the 450h+ Sports Luxury AWD, which sits just below the flagship and packs in plenty of premium kit for its $123,500, before on-road costs, price tag.

That makes it slightly more affordable than its main PHEV rivals; the BMW X5 xDrive50e (from $125,885 MSRP) and the Volvo XC90 Ultra (from $124,466 MSRP).

The Volvo does offer seven seats to the Lexus’ five, which may matter for larger families, and both rivals also outdo the RX on electric-only driving range - 65km in the RX compared with 77km in the Volvo XC90 and a generous 101km in the BMW X5.

Still, the RX fights back with a seriously stacked features list. Highlights include a panoramic sunroof, 10-way powered front seats with heating and ventilation, electrically folding rear seats (also heated and ventilated in the outboard positions), and a heated, power-adjustable steering wheel. Sound is taken care of by a premium 21-speaker Mark Levinson surround system.

Technology has had a solid upgrade with the 14-inch touchscreen multimedia display, 12.3-inch digital instrument cluster, digital rearview mirror, colour head-up display, live traffic navigation, wireless Apple CarPlay and Android Auto, 4G connectivity, four USB-C ports, one USB-A port and a fast wireless charging pad.

There’s also access to the 'Lexus Connected Services' app, allowing you to remotely lock or unlock the vehicle, pre-set the cabin temperature via three-zone climate control, configure driver profiles and even use your phone as a digital key.

Practical features include keyless entry and start, rain-sensing wipers, dusk-sensing LED headlights, rear sun-blinds, intelligent seatbelt reminders for the first two rows, a child presence alert and a hands-free powered tailgate. However, due to the plug-in hybrid system there’s no spare tyre, just a tyre repair kit.

The Impreza is equipped with just one engine and transmission for its sixth-generation, a 2.0-litre (FB20) four-cylinder horizontally-opposed ‘boxer’ engine mated to a continuously variable automatic transmission, driving all four wheels via the brand’s signature ‘symmetrical’ permanent all-wheel drive system.

The FB series is a development of the successful EJ series engines which lasted from 1989-2021. This more recent engine has new material science, heads, and seals which have helped the brand push service intervals out to 12 months rather than six, and should address issues which the older engines developed over time.

Power is on-par, but not a stand-out in the segment, with peak outputs of 115kW/196Nm.

Under the bonnet the RX450h+ Sports Luxury runs a plug-in hybrid powertrain that pairs a 2.5-litre four-cylinder petrol engine with a CVT auto and dual electric motors - one on each axle. Together, they produce a total of 227kW of power, though Lexus doesn’t quote a combined torque figure.

Still, it’s quick off the mark for a large SUV, with a 0-100km/h time of 6.5 seconds. There’s more than enough grunt for daily driving and overtaking, even if it doesn’t quite match the outright power of its key PHEV rivals.

One issue with having a non-turbo, non-hybrid 2.0-litre engine with all-wheel drive is relatively high fuel consumption. The Impreza has an official combined cycle fuel consumption figure of 7.5L/100km which is less than impressive in today’s market of hybrids and downsized turbocharged engines.

In my week of mostly stop-start city driving, the test example drank 11.1L/100km, which is disappointing.

Mercifully, it is capable of running on 91RON unleaded. For those who care, the CO2 output is officially 170g/km which is well above the 140g/km it would need to be at to avoid the wrath of incoming vehicle emissions regulations.

The plug-in hybrid system brings solid efficiency, with claimed fuel use of just 1.3L/100km. In real-world conditions (mostly urban driving with regular recharging) I managed a respectable 4.8L/100km, which makes a strong case for the hybrid set-up.

The fuel tank holds 55 litres and it's worth noting Lexus recommends using a minimum of 95 RON unleaded petrol to fill it.

Using our real-world economy figure you can expect a range in excess of 1100km between fills.

The RX450h+ is fitted with a relatively small 18.1kWh lithium-ion battery, supporting an NEDC electric-only range of up to 65km.

While that’s fine for short daily trips, it’s shorter than you'd ideally want in a family SUV of this size and it lags behind rivals like the BMW X5 and Volvo XC90 in this department.

Charging is simple enough. The RX uses a Type 2 charging port and accepts up to 7.0kW on AC power, which means a full charge takes around 7.5 hours, perfect for overnight top-ups. Lexus also includes an at-home charging cable and second adapter cable as standard, which is a thoughtful touch.

Have you driven a Subaru in the last 10 years? The drive experience here is pretty much uniform with the rest of the automaker’s range.

This means a lot of very appealing traits. For example, the new Impreza has a comfortable, compliant ride, really nicely weighted steering, and solid handling even on slippery surfaces courtesy of the all-wheel drive system.

The FB series engine also has a good bit of pull fairly early in the RPM range which makes it deceptively spritely, although power really hollows out the more you push it.

This makes it nice to drive around town, but less impressive when it comes to overtaking on the freeway.

This is reinforced by the continuously variable automatic which lends the engine a thrashy, rubbery character when pushed, but is nice and predictable at lower speeds.

The rev-happy engine is also quite noisy when a lot is asked of it, and like a lot of Japanese cars, but Subarus in particular, tyre roar picks up in the cabin above 80km/h.

It’s a comfortable and family-friendly drive, and I particularly like the way the plethora of active safety systems sit by the wayside and don’t interfere with the overall experience.

It is just a bit of a shame it doesn’t move the drive experience forward by a huge amount. The current Impreza doesn’t feel meaningfully different from the fifth-generation version which debuted in 2016.

The RX450h+ delivers power that’s pert and prompt, with genuine bursts of acceleration that make driving fun. It’s always ready to go and there's no lag in stop-start traffic - which gives it a lively, dynamic feel around town.

The transition between petrol and electric power is seamless; you hardly notice the switch, which makes for a smooth, refined driving experience. The cabin is impressively quiet, even on the highway, making long trips comfortable and peaceful.

Regenerative braking isn’t adjustable and is subtle enough that many won’t notice it which is likely a plus for fans of traditional internal combustion engines who are making the PHEV leap.

The adaptive variable suspension adds a sporty edge to handling, letting you confidently take corners at speed. There’s some body roll but the RX never feels top-heavy or unsettled.

The steering carries the weight of the SUV but remains well-balanced and responsive. Overall, it’s a well-tuned machine that’s a pleasure to drive.

Maneuverability is a strong suit, too, thanks to a tight 11.8-metre turning circle and a clear, easy-to-use 360-degree camera system. Parking is easy-as-pie, which a lot of drivers will appreciate.

The RX earned a maximum five-star ANCAP safety rating in 2022, scoring highly across all protection categories: 90 per cent for adult protection, 89 per cent for child protection, 89 per cent for vulnerable road users, and 93 per cent for safety assist systems.

Standard safety gear includes eight airbags (dual front, front side, curtains, front centre, and driver’s knee) plus a comprehensive suite of driver aids. Standout features include emergency call functionality, child detection alert, side exit assist, front and rear collision warnings, park assist and emergency steering assist.

Additional tech covers blind-spot monitoring, driver attention monitoring, tyre pressure monitoring, daytime running lights, LED cornering lights, rear cross-traffic alert, lane departure alert, lane keeping assist, traffic sign recognition, and intelligent seatbelt warnings for the front two rows.

Visibility and parking are enhanced by a 360-degree camera system and front/rear parking sensors, while adaptive cruise control adds comfort on longer drives.

The rear seats have two ISOFIX mounts plus three top tether anchors, accommodating child seats safely. Autonomous emergency braking is active from 5.0 to 80km/h for pedestrians, cyclists, and backover and up to 180 km/h for cars.

Subaru offers its fairly standard five-year and unlimited kilometre warranty on the Impreza, with 12 months of roadside assist included.

There is also a five-year fixed-price service program covering the first 75,000km, although it’s nowhere near as affordable as the Corolla or i30, coming in at an average annual cost of $464.64.

The Impreza needs to be serviced once every 12 months or 15,000km, whichever occurs first.

The RX comes with a five-year, unlimited-kilometre warranty, which matches its key rivals but isn’t exactly class-leading by today’s standards.

Servicing is handled via a capped-price program, with each service costing $695. The intervals are well spaced at every 12 months or 15,000km, whichever comes first.

This Sports Luxury grade also includes a three-year complimentary 'Lexus Encore' membership, granting access to a handy phone app and member benefits at partners like Westfield and Ampol. On top of that, you get 24/7 roadside assistance for added peace of mind.