Leapmotor B10 vs Lexus RX300

What's the difference?

I’ll be a shame if the B10 doesn’t sell well, because it doesn’t suffer from many of the downfalls of its compatriots and its price is extremely competitive for what you get.

As a comfortable smallish SUV, it meets par, and it’s on the better side of tech when it comes to cars from China, and it doesn’t have any major on-road red flags.

You really wouldn’t be disappointed with this having paid $40K, just skip the base model and go for the Design.

Note: CarsGuide attended this event as a guest of the manufacturer, with travel, accommodation and meals provided.

The Lexus RX300 is luxurious but affordable, making it great value and superbly comfortable, with a high level of fit and finish. Fear not about the four-cylinder engine being small – it makes plenty of grunt and handles daily duties perfectly well.

Which would you go for: An entry level Lexus RX300 or a top-of-the-range Mazda CX-9? Tell us what you think in the comments below.

Right after we praise the B10 for its value, we need to talk about its looks. A slight drop in tone as the second Leapmotor to land in Australia looks an awful lot like the first, and it’s relatively bland.

It’s not ugly, but it’s not particularly inspiring and there’s not much character to this little electric SUV.

It’s got a very upright silhouette at the front with a slightly sloping roofline at the rear, so the overall shape is appealing, but the lack of distinct features makes the B10 an anonymous commuter for now, especially with its similarities to the C10.

You can tell them apart by the C10’s slightly larger size if they’re near each other, or the B10’s more in-line headlight bar, where the C10’s have a ‘droop’ at the sides.

The large section of black at the lower half of the front is also unappealing, though darker colours like the optional 'Starry Night Blue' or 'Dawn Purple' (both $990) blend into it better than standard 'Light White'.

To its credit, at least the B10 doesn’t fall victim to the design crutch of adding trim and plastic for no reason.

In terms of the specifics, the B10 is 4515mm long, 1885mm wide and 1665mm tall with a 2735mm wheelbase, making it quite the large small SUV.

Inside, the cabin looks and feels roomy thanks to the test car’s light interior, decent windows and the light from the sunroof, as well as the fact the EV powertrains are compact and generally don’t interfere with cabin space.

Materials aren’t all scratchy hard plastic, though it is dotted around, and the general look of the B10 inside feels more premium than its price would have you thinking, despite the simplicity of the layout and design.

I've mentioned the Spindle grille and its jewellery-like appeal, and even the sharp edges of this SUV make the RX300 look like a carved gemstone, but I'm not the biggest fan of this vehicle's proportions. I think the door-to-window ratio is a bit off. There's just too much door for my liking.

That said, I'm intrigued by the craftmanship, the attention to detail and the use of materials, which make this SUV both pretty and intriguing.

The cabin mixes the plushness of cushioned surfaces on the dash and the armrests  with pleasing design elements, like the swooping aluminium trim, which zig-zags its way from the instrument cluster to the passenger's side of the centre console.

The giant media display is impressive, but the functionality is awkward, to say the least, but more on that in the practicality section below.

The Luxury is the entry grade into the RX model and so comes with smaller wheels than the F Sport and Sports Luxury above it, but it does score roof rails, dual chrome exhausts, a roof-top spoiler and rear privacy glass.

How big is the RX300 Luxury? The dimensions show it to be 4890mm long, 1895mm wide and 1690mm tall.

How do the looks compare with rivals such as a Jeep Grand Cherokee, a Mazda CX-9 or a Land Rover Discovery? Hmm, each has its own distinctive styling, with the Jeep having brutish American looks, the Discovery boasting prestige British off-roader personality and the Mazda an elegant air that's way beyond its price point.

So why haven't I mentioned the Mercedes-Benz GLE or BMW X5? Because they're at least $20K more than the RX300 Luxury, which costs around $72K. If, however, you can stretch the budget to an RX 350 Sports Luxury then you will be crossing the $100K threshold into Benz and Bimmer territory. So let's talk about price.

Getting into the B10 requires a minor annoyance - unlocking and locking the car requires a keycard to be tapped on the drivers’ side mirror like you're scanning to access your floor in a hotel elevator.

There’s an app that adds a fair bit of functionality, but having to whip your phone out ahead of jumping in the car is also irritating.

Once you’re in, though, the space inside the B10 is well laid-out, even if much of its functionality is crammed into the big central touchscreen - it’s always ‘points off’ for a lack of physical buttons in this section of a review.

Once you’re used to it and have sorted out your personal settings on the multimedia software, it becomes more natural and less distracting, though Apple CarPlay and Android Auto would occasionally lag in the car on test.

The good news is they now exist for the brand in the B10, with the Leapmotor C10 still lacking the vital in-car mirroring tech.

The ergonomics and interior space work well, generally, with comfortable pews and good vision, plus decent spaces to keep things out of the way. The phone charger being in a very visible and accessible position might tempt some naughty screen-keen drivers, and being in the sun without a vent for cooling while charging means your phone will get proper hot.

The second row is extremely spacious, belying the fact this car is classified as a small SUV. Oodles of legroom and enough headroom for a tall adult means the B10 outguns rivals in terms of good options for parents (note the B10’s extremely strong 95 per cent child safety score from ANCAP, too) or anyone who needs to cart humans around regularly.

Behind the second row is a 490L boot, which becomes 1475L when the second row is folded down.

There’s space under the floor for cables and messy bits, but unfortunately no spare wheel, just a tyre repair kit, so more points off for that.

The RX300 is a five-seater SUV and, while it would be even more practical if there was a third row, the cabin is impressively spacious.

Have a look at my photo of the entry to the RX300's back seat – that's a big doorway  for a car. Parents will understand the value of wide-opening doors and these ones made it easy for my child to climb into his car seat and for me to buckle him up. Head and legroom in the back seats are also good, even for me at 191cm tall, while the flat floor makes it easy to 'scoot' across from one side to the other.

There are two cupholders in the fold-down centre armrest in the back and small door pockets, but storage up front is better, with huge pull-out door pockets, two more cupholders and a large centre-console bin.

There's a wireless charger in the hidey hole in front of the shifter, plus six USB ports on board - the rear passengers have two of their own in the back of the centre console and the rest are up front.

The second row doesn't come with climate control, but the directional air vents back there got a workout over the 40C days we had over summer.

The RX300's boot has a cargo capacity of 506 litres, measured to the top of the second-row seat back.

Now,  the media system. Yes, it's a tech thing, but I'm calling out it out as impractical. The functionality of the trackpad used to navigate around the screen is frustratingly awkward. I think 12 swear words in a row came out of me on one occasion (no child on board, obviously), just trying to use the sat nav. The layout of the display menu is also confusing and non-intuitive.

The RX300 received a stack of new equipment in the September 2019 update,  including a 12.3-inch media screen (previously 8.0-inches), Apple CarPlay and Android Auto, plus four additional USB ports (for a total of six), and a kick-open power tailgate. The list price is $71,920 before on-road costs.

Other standard features include a 12-speaker stereo with DVD player, sat nav, wireless charger, dual-zone climate control, 18-inch alloys wheels, LED headlights, proximity unlocking, heated wing mirrors, rear privacy glass, and powered front seats.

The update added more safety tech, too, along with some changes designed to make the driving experience better, which I'll tell you about below.

You're not getting the heated seats and the head-up display that you do on the F Sport, or the Sport Luxury's Mark Levinson stereo, but the value is great here,  especially compared to more prestige brands, which ask more money for the same or less equipment.

The Mazda CX-9 Azami lists for $69,303 and offers more features, but the Lexus brand has more luxury badge appeal than the Mazda, or the $69,950 Jeep Grand Cherokee Limited, while the $73,221 Land Rover Discovery 2.0 i4S beats all of them in the prestige stakes because… it's British. And they have a royal family.

There’s only one powertrain option for the Leapmotor B10, a single, rear-mounted electric motor that produces 160kW and 240Nm, which makes the electric SUV good for a claimed 0-100km/h time of 8.0 seconds in both variants.

Top speed is a claimed 170km/h, also regardless of the variant.

The RX300 has a 2.0-litre four-cylinder turbo-petrol engine making 175kW and 350Nm, with a six-speed automatic transmission. This peppy four-cylinder gives the RX300 a completely different feel to the lethargic-but-powerful oomph of the RX350 and its naturally aspirated V6, even though it doesn't make a great deal more grunt, at 221kw and 370Nm. There's a difference in fuel consumption, too – find out how different below.

Is the RX300 all-wheel drive? Nope, it's a front-wheel drive. Only the RX350 and RX450h are AWD.

Leapmotor claims the B10 will, from its LFP battery of either 56.2kWh for the Style or 67.1kWh for the Design LR, draw 17.2kWh/100km or 17.3kWh/100km, respectively under WLTP testing.

The result is the Style offering up a 361km WLTP-tested driving range, and the Design LR a more useful 434km.

While we were unable to properly confirm this claim on the launch, the trip computer after a mix of highway driving and more spirited back-road testing displayed a figure of 13.5kWh/100km, while the previous 1447km of driving had reportedly measured in at 14.7kWh.

Charging from 30 to 80 per cent takes approximately 20 minutes regardless of spec and battery size. The smaller battery can be charged via DC fast-charging at a maximum 140kW, and the larger at 168kW. Both max out at 11kW under AC charging.

Lexus says the RX300, with its 2.0-litre four-cylinder turbo-petrol engine, should use 8.1L/100km of premium unleaded after a combination of open and urban roads. My own testing over 375.4km - taking in motorways, city and suburban call-of-daycare drop-off-duties - had our RX300 using 11.79L/100km, measured at the petrol pump. The real-world results almost always exceed that of the manufacturer's claims so you can expect the V6-powered RX350, with its claimed 9.6L/100km, to have a much higher mileage again after the same kind of usage.

The Leapmotor B10 was developed with testing at Stellantis’ European proving ground in Italy. This is because despite Leapmotor being its own brand within China, its international operations are a joint-venture between itself and Stellantis.

There are some on-paper shreds of evidence for this, a rear-wheel drive layout and a claimed 50/50 weight distribution help, but get the B10 on the road and it’s clear this isn’t a car that’s relying entirely on price, a long list of features and some showroom shine to sell.

After the initial familiarisation that comes with many new electric cars, particularly from China, the Leapmotor B10 becomes easy to settle into a rhythm with, especially if you turn off some of its more intrusive ADAS features like lane-keep, driver monitoring and speed limit warning. The latter can sometimes get a limit wrong, and though the B10’s chimes aren’t audibly overbearing, they are persistent.

While the B10 doesn’t excel in any areas on the road, it doesn’t fall down significantly in any either.

Its suspension soaks up bumps relatively well, and despite some vibrations on rougher roads the B10 is pretty comfortable. The tyres it rides on as standard, however, are rather noisy, so if there’s an opportunity to swap out the Linglong defaults to something better, we’d advise it.

The tyres also squeal rather quickly when cornering, not necessarily because the B10 is about to let go, but just because the weight of the car appears to be pushing on the front outside tyre in cornering.

The B10 holds up better than\ a family car really needs to in dynamic driving, but we wouldn’t be doing mountain runs or track days in one. 

There’s a little body roll in corners, but not nearly as much as has been in other models riding on the apparently soft suspension preferred in China.

The steering, braking and acceleration all have a mild vagueness to them, but once you’re honed in they’re all predictable. The steering can be adjusted for weight, and its lightest setting is too light, while the acceleration feels lethargic in its lowest setting and too aggressive in its highest.

There’s not a lot of regenerative braking strength, but it’s enough to help regulate speed once you’re used to how mildly it comes in - again, depending on your preferences and settings.

The good news here is that the B10 is easy to drive, and only very serious road bumps on fast corners unsettled it on test - the kind you’d expect to upset any car.

Good seats are the start of a good driving experience and I've not met a Lexus that doesn't have superb pews – from the uber luxury models, such as the LS500 and ES300, to sports cars such as the RCF or LC500, they all have supportive and comfy ones. Lexus somehow manages to  combine the comfort of a lounge chair yet still holds you firmly, all while placing you in a great driving position. The RX300 is no different. Large enough to fit me and my 191cm frame, yet bolstered enough to feel snug.

As for performance, the RX300, with its four-cylinder turbo-petrol engine with its six-speed automatic, is responsive and a bit hyperactive feeling. It's a very different sensation to piloting the RX350, which has a V6 and delivers its grunt in a more linear and lethargic fashion. Having driven both back-to-back I'd say the V6 and its eight-speed auto suits the RX personality better, but the 300 is a car that would have had a school report card that read: "Lots of potential, but lazy".

That said, plant the right foot and the RX350 will get the message to hurry up and can do the 0-100km/h sprint in eight seconds flat. The RX300 is keen but can't match it, with  a time of 9.2 seconds.

Either way, the ride comfort is excellent, although body control could be better - the speed bump and roundabout route I take to do the preschool drop off caused it to  get the wobbles, but give the RX300 a motorway and it'll cruise beautifully.

Forward visibility is good but vision through the tiny rear-quarter window (it's even smaller than it looks) while reverse parking isn't great.

The RX300 scored the maximum five-star ANCAP rating when it was tested in 2016. The September 2019 update added more safety tech to the RX300, including nighttime pedestrian detection and daytime cyclist detection for the AEB system, while the adaptive cruise control was given lane-trace assistance and road-sign recognition. This is on top of the already standard safety equipment, such as a reversing camera, blind-spot monitor and rear cross traffic alert.

Ten air bags, along with auto high beam, front and rear parking sensors, two ISOFIX points and three top-tether mounts for car seats and a space-saver spare wheel round off a comprehensive safety package.

The B10’s post-purchase prospects are generally solid, though Leapmotor’s six-year, 160,000km warranty is an area where it falls short of rivals which are offering longer, unlimited kilometre warranties.

The battery is covered for eight years or 180,000km, whichever comes first, which is pretty par for an EV.

Servicing is capped-price for the first eight years, with each service costing $370 on average. The eight-year span makes it pretty appealing, per 12-month interval or every 20,000km.

There are currently 20 dealers across the country, though more are coming, while Leapmotor also offers eight years of roadside service.

Lexus recommends servicing the RX300 annually or every 15,000km, with the first three services capped at $595.

The duration of Lexus's factory warranty is four years/100,000km, which is a bit longer than BMW and Benz's coverage, but behind the five-year/unlimited-kilometre warranties of the mainstream brands.