Mitsubishi ASX vs Lexus Rx450H+

What's the difference?

There is no question the new ASX is a much better car to drive than the model it replaces. This one is actually fun behind the wheel. The tech represents a massive upgrade, so too does the interior design and practicality. The fact is, it’s a much more expensive car than the old ASX. It is a European built and designed small SUV with loads more tech and features so when you consider that, the pricing makes more sense.

Regardless of the previous model, this new ASX impresses. It’s not perfect - the LS is missing too many items, no hybrid, slightly firm ride - but it’s now a genuine rival for higher quality rivals in the small SUV segment. If the ASX is in your price bracket, it might be time to add it to the consideration list.

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.

The look of the new ASX is not a huge surprise given it’s based on the second-generation Renault Captur that launched in 2021. Actually the ASX we get is the mid-life facelift for the ASX/Captur twins in Europe, so the design has been refreshed.

At 4238mm long, 1797mm wide, 1585mm tall and with a 2639mm wheelbase, the new ASX is 127mm shorter, 13mm narrower, and 55mm lower than the original, but the wheelbase is only 31mm shorter.

It has a round almost bubble like quality to the exterior design, and not in a bad way. The redesigned front end has Mitsubishi flavour thanks to the ‘Dynamic Shield’ front-end signature, while the sleek headlights and black and chrome grille give off an almost menacing look.

C-shaped tail-lights at the rear flank a massive ‘Mitsubishi’ badge and the lower cladding ensure there’s no doubt this is an SUV.

It’s a handsome car and should get some attention on the road.

Inside, it’s not the last word on interior design, but it’s well laid out and functional. It’s definitely another massive leap over the old model.

At the launch there were no LS grades to drive, but the Aspire comes with cool grey cloth trim and roofliner that adds a nice contrast to the darker plastics and finishes. It’s more vibrant than the top-spec Exceed which has an all-black interior with leather-appointed seats.

The top two grades feature a floating console where the gear shifter is housed (a standard shifter in LS, and notch-like ‘eShifter’ in Aspire and Exceed), while the big multimedia screen dominates the dash.

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.

This is an area the ASX excels in.

Up front there are loads of storage options. Multiple nooks for mobile phones, keys and other items, and the Aspire and Exceed get a wireless charging pad and extra storage under the shifter.

The central bin isn’t massive but doesn’t need to be with all the other cubbies, and there is ample room for large and tall bottles in the door bins.

A pair of USB-C ports and a 12V port up front handle electronics.

Thankfully there are physical controls for climate control at the base of the multimedia screen. The other functions housed in the screen like vehicle information and connectivity options are logically laid out and the system is not overly complicated.

Opting for the Aspire or Exceed means you get the brilliant Google Built-in, which is exactly what it sounds like. It’s essentially the Google operating system but for your multimedia screen so you have in-built Google Maps, Play and Assistant. Log in to your Google account and all your favourite places show up on Maps, and you can also log into Spotify and the like. It's a great set-up.

The seats are supportive and well bolstered. Much nicer than the old ASX’s overly cushioned seats.

The second row has more space than you’d expect looking at the car. It’s not cavernous by any stretch, but clever touches like scalloped out front seatbacks and roofliner ensure decent leg, toe and headroom, even with the sunroof in the Exceed. However, three adults in the rear isn’t super comfortable - we tried. Kids should be fine.

Amenities include more USB-C ports, rear air vents (very rare in this category), storage for small bottles in the door, phone holders in the door arm rests, dual map pockets, but no central armrest, which is no great loss.

That rear pew is comfy and more supportive than the old ASX. And it has a neat party trick. You can slide the entire row (via the base) forwards by up to 16cm, making for more cargo space in the boot. It also folds 60/40 split and when the boot floor is in its highest setting the seats fold flat, aiding loading.

Yet another clever feature is the split level boot. It features under-floor storage that adds a handy 183 litres to the cargo capacity.

With all seats in place Mitsubishi says the cargo space is 484 litres, which is 23 per cent more than the old model. If you slide the rear seat forward as far as it goes that increases that figure to 616L. And if the second row is folded flat the capacity is 1596L.

Interestingly, despite having space for one under the bottom boot floor, a spare wheel (even a temporary one) is not a standard feature. Instead the ASX comes with a tyre repair kit and offers a temporary spare wheel as part of its accessories offering for $750. If you’ve got the space for a spare wheel, why not make it standard? Especially when Mitsubishi is a popular brand in regional and rural areas.

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.

For now, all grades of the new ASX use the same 1.3-litre four-cylinder turbocharged petrol engine offering up 113kW of power and 270Nm of torque. That’s up on the old 2.0-litre naturally aspirated unit’s 110kW/197Nm.

This is paired with a seven-speed dual-clutch transmission driving the front wheels only, so there’s no all-wheel-drive version.

Mitsubishi is looking into the mild hybrid and full hybrid versions that are offered in Europe but not confirmation on those as yet.

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.

The new ASX consumes 6.4 litres of fuel per 100 kilometres on the combined cycle and emits 142 grams per kilometre of CO2.

That’s a decent figure for sure, but not quite as frugal as the 1.3-litre Nissan Qashqai, which manages 5.8-6.1L/100km.

The ASX drinks 91 RON fuel and has a 48-litre tank which makes for a theoretical driving range of about 750km.

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.

Look, it’s fair to say the original ASX was not a driver’s car. Reliable? Yes. Spacious? Absolutely. Great value? You bet. But fun to drive? Not so much.

So it’s good news then that the new-gen ASX is much more engaging to drive. I quite enjoyed the current-gen Renault Captur the last time I drove it, and the underpinnings of the ASX are the facelifted version of that Captur.

The 1.3-litre turbo-petrol unit might not be ultra quick off the mark, but it is sprightly and really comes alive when you’re at speed. It also has a decent engine note.

I've recently driven another Renault model with basically the same powertrain but it suffered from dreadful lag - a combination of a turbocharger and a dual-clutch transmission.

I had expected the same of the ASX, but there’s little lag to speak of. And the transmission is much smoother in this application. It doesn’t hold gears or do anything DCTs are known for, which is a lovely surprise.

Steering is sharp enough and the feel can be adjusted in the settings. Aspire and Exceed grades come with Comfort, Sport and Perso mode, which is for personalisation.

Ride quality is fine on smooth roads but big pot holes and other bumps are felt in the cabin. It is a European car, so no surprise that it’s been tuned for a more European experience. It’s not so firm it’ll dampen the drive experience, but it could be a touch more supple.

On that, the ASX has not undergone a local ride and handling tuning program like the one its larger Outlander stablemate has benefited from.

That doesn’t mean you can’t have fun in the ASX - you can. It handles high-speed bends on country roads surprisingly well, with more grip than you’d expect. There’s a little body roll but nothing dramatic.

More time behind the wheel is needed, but the tight chassis means the ASX likes a corner.

The cabin has better insulation than the outgoing model but it’s still not the most hushed small SUV money can buy. But it’s another element that’s far from a dealbreaker.

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.

Mitsubishi's standard warranty is five years or 100,000km, but if you service your car exclusively at a Mitsubishi dealer, it extends to an impressive 10 years or 200,000km.

You’ll also get 10 years of roadside assistance and capped-price servicing. The servicing schedule is every 12 months or 15,000km.

Service pricing starts from $349, but bigger services every four years or 60,000km will cost circa-$1000. The average price of a service across the 10 years is $568, or the total overall is $5686.

Mitsubishi has an extensive network of 185 dealers across Australia and many in regional areas. So service coverage is among the best in the country.

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.