MG 3 vs Lexus Rx450H+

What's the difference?

Aside from its safety shortcomings and underwhelming powertrain, it’s easy to see why the MG3 has become a successful part of the brand’s line-up. If you’re driving around a rural centre like I was, it makes a lot of sense.

Whether you choose the Excite model, which has a bit more visual pizzazz, or the Core model, which is our pick of the range, the MG3 is well priced, has the media tech buyers are after, is a charming looking thing that comes in a range of great colours, and is smartly packaged, too. 

Thanks to the team at Orange MG for assisting us with this the loan vehicle for this review. Head to Orange MG for more information.

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.

It’s a fresh looking thing, the MG3. 

From its attractive front-end with “London Eye” LED daytime running lights, its Euro-look angular front bumper and chrome-trimmed grille, and its angular window lines, it really does have a distinct personality.

It looks a lot more modern and enticing than the first version of the MG3 sold here, and I have no doubt that a lot of buyers of the MG3 have been attracted by its sharp styling first and foremost. MG has done a tremendous job of creating a family look - it just happens that the family looks like it has been taking good care of itself, keeping active and trim, too.

The rear end isn’t quite as attractive, with the vertical tail-lights making it seem taller than it is. It’s still a nicely sculpted back-end, though.

On the Core model you’ll get some lower blacked-out design trim bits, and the wheels fitted are 15-inch alloys. 

The Excite model seen here is a little more, dare we say it, exciting to look at. That’s down to its body kit, consisting of lower chrome elements on the front bumper, a set of black side skirts, and a hatch-mounted rear spoiler. You get 16-inch alloy wheels, too. 

In terms of dimensions, it’s closer in size to the Kia Rio than it is the Picanto. With a length of 4055mm (on a long-for-its-size 2520mm wheelbase), a width of 1729mm and height of 1504mm, it’s a pretty chunky little unit. 

It is rather conventional in the way its interior is designed, however - there’s no sliding second row (like the Suzuki Ignis) or flip-folding seats (a la the Honda Jazz). Check out the interior pictures below to see for yourself.

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.

If you’ve owned the same old car for years and you’re setting foot in an MG3 for the first time, you’ll probably feel amazed that you can get an interior with interesting finishes, a high-tech screen and decent materials at this price point.

Earlier versions of the MG3 were nowhere near as good inside as the current model, which has been on sale since 2018. It’s not perfect, but there are plenty of things to like.

The seats offer plenty of adjustment, including a huge amount of height adjustment for shorter drivers. The seat is comfortable, though some drivers might find it hard to get the right position: there is no reach adjustment for the steering wheel (only rake adjust), and you can’t adjust the seatbelt height, either. 

I really like the seat trim which is a broad tartan design (with “synthetic leather” bolsters and contrast stitching in the top-spec Excite), mirrored by an etched tartan aluminium trim piece on the dashboard - it looks really smart, even if my OCD radar was set off by the fact the trim wasn’t aligned to match perfectly between the cushion sections. Take a look at the interior pictures to see what I mean.

There are some really nice elements to the cabin. Things like the 'lock' and 'unlock' button on the driver’s door, which looks like it has been stolen directly from Audi’s parts catalogue. The same can be said for the speedo instrument font. 

There’s no doubt that it’s built to a price, but it doesn’t feel anywhere near as cheap as you might expect. We’ve criticised Audi, VW and Skoda for cutting costs with hard plastic trims on doors and dashboards, and the MG has plenty of hard plastics, too - but it’s expected at this price, not double it.

There’s a standard 8.0-inch touchscreen media system with AM/FM radio and Bluetooth phone and audio streaming, plus USB connectivity and smartphone mirroring - meaning you get Apple CarPlay, essentially negating the need for sat nav if you use an iPhone. You can option a GPS navigation system on the Core model, but satellite navigation comes standard on the Excite. There's no Android Auto mirroring available at all, though.

In previous models from the SAIC stable - including the LDV T60, and MG ZS - I had troubles with the media screen, but the version in the MG3 Excite I drove was quick and problem free, even when disconnecting and reconnecting my phone multiple times. 

There are other little things that could be improved, like the fact the trip meter is difficult to navigate, and there’s no digital speedometer. Also, the digital climate control in the Excite model shows up on the media screen, though by way of a graphic rather than a temperature number. In the base model Core there’s a simpler manual a/c system. 

The steering wheel has a part leather trim with perforated edges which makes it look and feel a little bit sporty – and it has a flat bottom as well, which will appeal to the sporty-minded buyer. There are stereo and cruise control buttons on the wheel, but the stalks behind are “back to front”, with the left stalk for indicators and lights, and the right for wipers. 

As for storage, up front there is a single cup holder between the seats, a couple of small storage sections including a trench for a wallet, and another storage section in front of the gear selector - that’s where the MG3’s single USB port is, too.

The front door storage includes bottle holders, and there are soft padded elbow pads on the front doors - which is more than we can say for some of those aforementioned Euro brands.

With the driver’s seat set in my position (I’m 182cm tall), I had enough back seat space to be comfortable. There was enough knee room and toe room, and reasonable headroom if I sat perfectly still - although the slightest tilt of my head to the outer side of the car saw my noggin contact the headlining. Rear seat comfort is okay - the backrest is a firm, but there’s good visibility out the windows. There are dual ISOFIX child seat anchor points, and three top-tether points for baby seats. 

In the back the storage is minimal. There are two map pockets, but no door pockets, and there’s no flip-down centre armrest with cupholders. But there is one large pocket in front of the middle-seat rear passenger which would do for a bottle. The back seat also misses out on soft elbow pads on the doors. 

Boot space is good for a car in this size segment. You’ll only really do better if you buy a Honda Jazz or Suzuki Baleno, as the MG3 offers a deep and boxy cargo zone, with a cargo capacity of 307 litres to the cargo cover. 

Need more luggage capacity? The back seats fold down in a 60:40 split, alleviating 1081L of space - though the load-through is limited as the seats don’t fold completely flat. Or you could fit a roof rack. 

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.

Keen to know the engine specs for the MG3? Well, it’s pretty simple on the specifications front.

There’s just one motor available: a 1.5-litre four-cylinder non-turbo petrol engine, dubbed NSE Major by MG. 

It has class competitive outputs of 82kW (at 6000rpm) and 150Nm (at 4500rpm). It is only available with a four-speed automatic transmission and front-wheel drive. There’s no manual transmission available anymore - it was available in the earlier MG3s, but no more. 

While some competitors offer higher-powered flagship variants that act as the horsepower hero of the range, there’s no such variant in the MG3 range. Not yet, anyway. For now there’s just one engine size, no turbo, and no diesel or EV models to speak of either.

The tare mass/tare weight for the MG3 hatch is 1170kg, which is a bit heavier than a Mazda 2, but pretty much on par with a Kia Rio. 

Considering a caravan holiday with your new MG3? Maybe think twice - the maximum towing capacity is just 200kg. 

If you’re worried about engine problems, clutch problems, or have questions about the battery, gearbox, or the oil requirements, be sure to stay tuned to our MG problems page. And if you're curious about whether it has a timing chain or timing belt? It's a chain.

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 combined cycle fuel consumption claim - which is what the brand claims the vehicle should use across a mix of driving situations - is the same across the MG3 line-up: 6.7 litres per 100 kilometres.

During my time with the car - which consisted of exactly 100km of mixed driving - I saw an at-the-pump fuel economy return of 7.7L/100km, which is decent.

The fuel tank capacity of the MG3 is 45 litres - meaning a theoretical mileage per tank of about 580km. It runs on regular unleaded (91RON), too.

Just be aware, the filler neck of the fuel tank is a little less angled than some other cars, so you might find it can splash back when it ‘clicks’ the first time.

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.

You might think of MG as a sports car brand - that’s what they built back in history, after all, and those are the reminiscences the company is hoping you’ll have when you see the famed octagonal badge.

And of the current crop of models that MG sells in Australia, the MG3 is undoubtedly the sportiest. 

That comes down to its driving manners, steering and ride - but not the engine and transmission.

The powertrain feels to be lacking enough power and torque to make it feel light and zippy when accelerating. The automatic transmission doesn’t make the greatest use of the engine, and can be indecisive when climbing hills or when you ask more of the car. Oh, don’t even think about a 0-100 performance claim - no such number exists.

In urban driving at lower speeds it’s fine. Between traffic lights and encountering roundabouts, and there’s not much to complain about. It doesn’t have any lag or lurch from a standstill, and is smooth and quick enough to get away from rest, too.

It’s just once you start to ask more of the engine and transmission that you notice that things could be better. There is, at least, a manual shift mode for the transmission to allow you to take control of the shifts, and there’s a sport mode too, which will hang on to gears and quell the indecision of the transmission to a degree.

On the open road it gets along fine, sitting at the speed limit without much fuss - although once you encounter a hill, you will notice the speed drop off a little. And the cruise control seemingly has a bit of a mind of its own, with a set speed displayed at 100km/h, I noticed the speed varying between 90km/h and 110km/h, depending on the terrain.

It’s the road holding, grip, handling and steering that help it live up to the badge, with steering that has a nice hefty weight to it and good directness at pace or around town. It even offers a little bit of feel through the wheel, which is welcome. That grip was surprising given the tyres fitted to the Excite’s 16-inch alloy wheels (Giti GitiComfort 228 tyres in 195/55/16 size).

The ride is tuned with a firmer character to it than you might expect. It’s not to the point of discomfort, and nor is it fidgety or clumsy over potholes or sharp edges. And that tune for the Macpherson strut front suspension and torsion beam rear suspension means that it feels plenty grippy in corners. Over my drive loop - incorporating sweeping bends and tighter twists - the MG3 stuck itself to the road commendably, with no noticeable skittishness to speak of. 

Indeed, I kept thinking that the suspension tune reminded me of a VW, Skoda or Audi city car - assured, confident, and ultimately a bit of fun.

The braking performance was good, too - it pulled up true and straight under heavy braking, and offered decent response at city speeds, too.

One minor criticism was some noticeable wind noise from around the windscreen pillar / mirror area, which was evident at speeds from 70km/h up.

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.

I kept thinking about one particular thing over my time in the MG3 - the warranty. It’s such a great peace of mind move from the company to back its cars with a seven-year/unlimited kilometre warranty plan. 

If your brain works like mine, you could calculate it out and see the purchase of the MG3 completely differently: what about thinking of it as a $2500-ish-per-year investment, and at the end you get a free car…! The same can be said of the Kia Picanto and Rio, though.

That warranty should put your mind at ease when it comes to reliability, problems, common faults and issues, as any required fixes are set to be covered by the brand over that period. And buyers get seven years of roadside assistance included, too.

Maintenance is required every 12 months/10,000km, whichever comes first. That’s a bit more regular than some rivals (most have 15,000km intervals), but the brand backs its cars with a seven-year fixed service cost plan. Servicing costs averaged out over the first seven years/70,000km of ownership equate to $382 per visit (before GST), which isn't cheap, but nor is it expensive.

Here's a rundown of the recommended service costing (all prices pre-GST): 12 months/10,000km: $231.76; 24 months/20,000km: $385.23; 36 months/30,000km - $379.72; 48 months/40,000km - $680.74; 60 months/50,000km - $231.76; 72 months/60,000km - $533.19; 84 months/70,000km - $231.76.

Keep the service logbook stamps up to date in your owners manual - it’s a ticket to better resale value. 

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.