BYD Sealion 6 vs Mahindra XUV700

What's the difference?

So, should Toyota, Tesla, Hyundai and others be worried about the arrival of the Sealion 6 and BYD’s new DMi powertrains? Yes, but not because it represents any major breakthrough in technology or dynamic prowess. 

Instead, the strength of the Sealion 6 is how average it is. It may not be the obvious class-leader in any particular area, but it does a good job in almost every measurable aspect and doesn’t possess any major flaws.

Yes, there are still questions about the long-term dependability of BYDs but that’s a risk any new owner will need to accept. But the very sharp pricing should tempt plenty of buyers to take that chance and continue BYD’s steady upwards trajectory in the Australian market.

The Mahindra XUV700 is a solid, well-rounded family SUV. It has a practical cabin with a usable third row and a punchy turbocharged powertrain. The Indian manufacturer needs to address a few things like interior quality and some ADAS calibration and there’s more work to do when it comes to ride and handling. But overall this seven-seat SUV represents exceptional value for money against some pricier rivals and should be on more consideration lists.

This is one area where BYD has a mixed record. Not to be unkind or create an international incident, but the Chinese car industry has a history of not being totally original with all of its automotive designs.

However, things are improving and the Sealion 6 is a good example of the Chinese industry learning to develop its own style. While there are some subtle hints from European models, overall it’s a smart-looking mid-size SUV with some character to it - rather than being a bland imitation of something else.

One area where the Sealion is a cut above its competition is its size, being longer than and wider than the RAV4, Mitsubishi Outlander and Nissan X-Trail.

The XUV700 is a reasonably handsome vehicle in the metal. It has a distinctive look that ensures it is immediately identifiable as a Mahindra. It is a clear evolution of the XUV500 it replaces, but far more coherent. 

It has a typical SUV shape but in profile the bonnet looks short and it has a big glasshouse with a kicked-up window line from the C-pillar back.

Front on the unique headlights surround an appealing six-bar grille with the cool Mahindra badge front and centre.

The rear features stretched and pinched tail-lights and the XUV700 sits up high on the road.

Inside the cabin is neat and the dash has an uncomplicated layout. It’s not the world’s most visually appealing interior but it doesn’t get anything wrong. Although the steering wheel feels a bit cheap.

The lovely dark grey interior is broken up with a light grey upper half and there’s stitching on the seats, dash and steering wheel. There are plenty of piano black inserts but it's not overdone. 

That external size translates to a roomy cabin, which also has some flair to the design but thankfully a bit more restrained than the smaller Atto 3 - which is a bit over-the-top in this reviewer’s opinion. 

The element that sticks out immediately is the large central touchscreen which, like other models in the range, can rotate either vertical or horizontal, depending on your preference.

I don’t understand the point of this, because when rotated vertically it impacts your forward vision and can interfere with the air conditioning vents; and I can’t even see it with my polarised sunglasses.

It simply makes more sense horizontally, but I guess all carmakers are looking for catchy gimmicks these days. But while it may seem like a cool party trick it remains somewhat confusing to me, like one more thing to go wrong. But maybe I’m just getting old and grumpy.

What I do like and think is a great idea is double smartphone charging pads in the centre console. And overall the design of the cabin feels well thought out and has plenty of useful storage areas.

The seats are fine, a little flat and the fixed headrests are irritating, but overall they’re soft and supportive enough.

The key in the second row seating is the amount of space, with the extra length of the Sealion 6 compared to its rivals showing up with more knee room in the back for families with growing teenagers or those who need to carry their adult friends.

There’s also a pair of USB ports in the back too, so everyone can keep their electronics charged.

The boot is a good size, measuring 425 litres on paper, and has a nice long and wide floor. But some of that space is thanks to the lack of a spare - so that counts against it in my book.

The Mahindra boasts a versatile, practical cabin - not something all mid-size seven-seat SUVs can claim.

This grade has electric ‘smart’ door handles that pop out when the car is unlocked. They’re not super easy to grab and feel a little gimmicky. 

The sunroof has a solid power-operated blind, unlike an increasing number of models that come with a flimsy sheer blind or no blind at all, which is unimaginable in our hot Australian climate. Thank you, Mahindra! 

Another cool feature is the extendable sun-visors that are great at blocking out sun at the front or side, especially on longer drives.

A chunky rear centre headrest impedes rear visibility, but it is easily removed. However the rear outboard headrests are also big and that impacts vision out the large rear side windows.

Great to see Mahindra has retained physical controls for the air conditioning, although if you want to adjust anything digitally, you can via the central screen.

Sitting under that and the air vents are buttons for the reversing camera, hazard lights and other controls, then there’s a wireless phone charger, an extra little slot for your phone and two USB-A ports. No USB-C up front in the XUV700.

There’s decent storage up front with two compact, squarish cupholders in the console, a small central bin with a handy rubber key holder, while the glove box is a decent size and will fit more than just the manual.

Bottle storage in the front doors is excellent. The tall CarsGuide bottle fits easily and there’s extra storage for a bunch of other items. 

The front seats are on the firm side but the side bolstering is good, helping you feel nicely secured. The base makes you feel like you’re sitting on the car rather than in it. There’s not a great deal of adjustability - you can’t extend the under-thigh cushion - but the Mahindra has Mercedes-Benz-style controls on the door.

The multimedia screen houses a lot of functions. If you tap the bottom of the screen the climate controls including seat heating pop up. There are more functions if you tap the top of the screen like sound, camera view and the like.

The multimedia screen homepage has tiles, one says ‘Fun in XUV700’ (for Android Auto, Apple CarPlay and radio) and the other says ‘Fun with XUV700’ (vehicle performance). 

Driver assist functions are accessible via the driver’s instrument display using the steering wheel-mounted controls and you can change the intensity of cruise control and lane keep assist or turn off functions like traffic sign recognition and smart pilot assist. 

There are a few cons up front. The indicator sound is awful and makes it feel cheap. There are some quality issues, like the flimsy panel to the lower right of the steering wheel that’s home to the auto stop-start. It feels like it’s going to fall off. And some of the fabrics don’t quite line up.

The device charger could do with a fan as my phone gets super hot charging on the pad, while the ‘Siri’ talk-to-text function of Apple CarPlay is patchy. 

In the second row, the legroom is decent and while there’s not acres of room I don’t feel cramped sitting behind my 183cm (six-foot) driving position. A tiny transmission tunnel means good centre seat legroom. There’s a lever on the front passenger seat back allowing rear passenger behind to move that seat forward.

Headroom is also decent without being ample. There’s about an inch between my head and the roofliner.

The window line is low enough for small children to see out but not so low you feel like you’re sitting on the car. 

The rear seating row is comfortable enough but the backrests - which recline - are flat. 

You’ll find rear knee-level air vents, one USB-C port (the only ‘C’ port in the car) and a pair of map pockets, a phone slot under the vents, a centre armrest with two cupholders and loads of door storage for big bottles and more.

For child seats, the two outboard seats have ISOFIX anchors and there are two top tethers as well.

Access to the third row is much easier than I expected for a mid-size seven seater. The passenger-side single outboard seat tumbles flat then up, leaving plenty of space to get into the rear. There’s even a grab handle to assist.

Headroom isn’t great back there for me, but again, I am six-foot tall. A kid will be fine. There’s a surprising amount of legroom and toeroom. 

Third-row occupants have access to cupholders and air vents on both sides, a fan speed dial, speakers and a 12-volt outlet that is also accessible from the boot when the seats are lowered.

The fact the curtain airbags cover the third row is a big tick. Overall, a solid third-row experience.

There’s a handy plastic lever on the rear of the seats to lower and raise the third row easily. They don’t quite fold flat into the boot floor so they sit up a little, but don’t intrude on boot space.

It looks like there is a cargo cover option but it wasn’t fitted to this example of the car. There are lots of hooks in the boot to hold bags, but note there is no power tailgate - it’s a manual operation in the Mahindra. 

You also get a temporary spare wheel housed externally on the underside of the car.

One thing I can’t tell you unfortunately is the boot volume. Mahindra doesn’t provide those figures. I can say that when all three rows are in place, there is not much room behind the third row. Just enough for three backpacks or a few bags of shopping in a row. When the third row is lowered, there’s ample luggage space.

The Mahindra XUV700 is offered in two model grades, both powered by the same petrol engine. It all kicks off with the AX7 from an affordable $39,990, drive-away.

The focus of this review is the AX7L which tops the range at $42,990, drive-away, which is still great value.

At this price the Mahindra undercuts most mainstream medium SUVs like the Toyota RAV4 and Mazda CX-5 and lines up more closely with the GWM Haval H6 and MG HS from China.

But unlike most of the mid-size SUV set, the XUV700 has a third seating row. The only other offerings in this category to boast that option are the Honda CR-V, Mitsubishi Outlander and Nissan X-Trail, - all of which are more expensive for an equivalent seven-seat grade when factoring in on-road costs.

For the model year 2025 update, both Mahindra XUV700 grades gain all-black interior trim, while the AX7L updates to wireless Apple CarPlay and Android Auto, as well as ventilated front seats with memory settings for the power function.

Standard gear in the AX7L includes a panoramic sunroof, dual 10.25-inch screens, synthetic leather trim, keyless entry and start, a 12-speaker audio system, wireless charging and a leather steering wheel.

You also get a 360-degree surround-view monitor, Bluetooth, rain-sensing wipers, dual-zone climate control, 18-inch alloy wheels and an electronic park brake.

The only option available is premium paint at $495 extra, including the 'Midnight Black' shade on our test car.

This isn’t top-grade luxury car levels of standard gear, but there's very little that’s missing and for $43K, that’s impressive.

While BYD has made its name in Australia as an all-electric brand it has always referred to itself as a 'new energy' company, and the Sealion 6 (and upcoming Shark ute) are why.

That’s because these feature BYD’s new 'Dual-Mode Intelligence' (DMi) powetrain - a hybrid system to you and me.

As mentioned above, the biggest difference between the Dynamic and Premium models is the powertrain, with two reasonably different systems.

The Dynamic is powered by a 78kW/135Nm 1.5-litre four-cylinder petrol engine, paired with a 145kW/300Nm electric motor - making for a combined system output of 160kW/300Nm. Notably, this powertrain only drives the front wheels.

In contrast, the Premium has an all-wheel drive set-up, combining a turbocharged version of the petrol engine (good for 96kW/220Nm) with a pair of electric motors, one on the front axle and one on the rear to produce a combined output of 238kW and 550Nm.

Both models get the same 18.3kWh ‘Blade’ battery, which is BYD’s proprietary technology underpinning all of its models and is attracting attention from other brands.

For reference, the Outlander PHEV has a 20kWh battery, Nissan’s X-Trail e-Power has a 2.1kWh battery, while the more conventional RAV4 Hybrid has just a 6.5Ah battery.

The XUV700 is powered by what Mahindra calls its ‘mStallion’ 2.0-litre, four-cylinder, turbo-petrol engine delivering 149kW of power and 380Nm of torque. These are solid outputs and the only petrol-powered mainstream rivals that come close to those figures are the Kia Sportage/Hyundai Tucson mechanical twins, with their 1.6-litre turbo punching out 169kW/350Nm.

The Mahindra’s engine is paired with a six-speed automatic transmission driving the front wheels only, so no all-wheel-drive option here.

There are multiple modes to drive it in, including electric only, with the Dynamic able to go up to 92km on a single charge, while the Premium manages a claimed 81km.

However, it's important to note these are the NEDC standards and not the more real-world like WLTP,  so you may not achieve those in practice.

The claimed fuel consumption is an impressive 1.1L/100km for the Dynamic and 1.4L/100km for the Premium although again achieving those in the real world will take some effort.

With a 60-litre fuel tank BYD claims the Dynamic has a driving range of just over 1000km, while the Premium can manage around 960km.

It's also worth noting the Sealion 6 comes equipped with vehicle-to-load charging which means you can draw power from the batteries to run small electronic devices if you need to.

It’s a bonus feature that may or may not be of use, but is one of those things that may come in handy one day to get you through a camping trip or a BBQ at the park.

The XUV700 is only available with that petrol engine so no fuel-saving hybrid or plug-in hybrid options for now.

It’s also on the thirsty side with an official combined (urban/extra-urban) cycle fuel use figure of 8.3 litres per 100 kilometres. That’s more than petrol versions of the Mitsubishi Outlander and Nissan X-Trail.

After a week of mixed but mostly urban driving, the trip computer showed an average of 8.5L/100km, but my own calculation based on real-world use at the fuel pump came out at 11L, so a bit of a discrepancy there.

We drove the Sealion 6 Dynamic and despite having the less powerful powertrain it feels good on the road. The DMi system offers good performance, with quiet acceleration off the mark and a good integration between the petrol engine and electric motors. We haven’t driven the Premium yet, so we can’t make any comment on how different it feels.

It’s hard to make a definitive call on the Sealion PHEV powertrain because, like every plug-in hybrid, its greatest strength relies on how the owner operates it.

If you don’t charge the battery every day or so, you’ll just end up lugging around a battery and electric motor for little benefit. However, if you do keep the battery topped up, you can do most of your urban commuting without needing to turn the petrol engine on, which should result in some very low fuel consumption figures.

The company clearly knows this, which is why BYD Australia is offering a complimentary home charger to the first 3000 customers who order a Sealion 6.

Not only will that encourage sales but it will also help owners become evangelists for PHEVs in the future, because they’ll have the best possible experience.

So, a large part of its strength or weakness rests on the owner’s behaviour and that’s something we can’t assess.

As for the rest of the driving experience, the ride comfort is fine. It can’t match the class-leaders for compliance or dynamics, but the Sealion feels pleasant to drive around the urban environment and on the freeway at speed.

Biggest criticism is the steering is very, very light. While that makes parking easier, it feels so light you get very little feedback from the front wheels so it can feel vague at times.

Overall the driving experience is best described as fine. It doesn’t have any major vices but neither does it set any new benchmarks. 

On the road the Mahindra has some clear pros and cons. Overall, it’s a more polished performer than you might expect.

The turbocharged engine sounds good when pushed and is a punchy unit, delivering linear acceleration and getting to speed quickly, mostly without fuss. The 235/60R18 MRF Wanderer tyres have a tendency to chirp when accelerating hard and the XUV700 would benefit from higher quality rubber.

The six-speed auto transmission works well with the engine, delivering smooth shifts but it can hold gears on downhill runs.

Ride quality is a mixed bag. Those tyres have a high sidewall but you’ll feel bumps like road and bridge joins, while speed bumps aren't so smooth, either. The ride is on the firmer side but it’s no dealbreaker. 

It’s a little top-heavy when cornering, so there is lateral movement in the car. A good reminder this is a family SUV, not a hot hatch.

Steering is overly light and a bit too sharp for this sort of vehicle. There’s nothing wrong with dull or slower steering in a family car because it’s less responsive if you accidentally turn the wheel when distracted by shenanigans in the back seat.

The brakes are also quite sensitive. Just a tap of the foot and you’re coming to a full stop.

A bit of road and wind noise creeps into the cabin, so it’s not the most hushed interior, but it’s not too dramatic.

Other points include a decent turning circle, making it more nimble than you might think in tight parking spots, and poor-quality, low-definition lane watch camera display. Also the remote lock and unlock is temperamental. You need to double check it’s locked.

The XUV700 is yet to be assessed by ANCAP so it currently doesn’t have a score.

The standard safety list is solid without being exceptional, and it includes seven airbags in this grade, with the curtain airbags stretching all the way back to the third seating row. However, it misses out on a front centre bag.

In terms of driver aids and advanced driver assistance (ADAS) tech, it also comes with adaptive cruise with stop & go, auto emergency braking, lane keep assist, lane departure warning, traffic sign recognition, tyre pressure monitoring, blind spot monitor and a pilot assist function. It lacks a rear cross-traffic alert.

The reversing camera lags when you put the car in reverse, taking a couple of beats to kick in. Not great when you’re trying to park on a busy street.

The adaptive cruise needs further calibration. When the system detects a car in front, it slows the Mahindra down a little too dramatically and takes too long to respond.

BYD is a small company but has partnered with mycar service centres to make maintaining your Sealion 6 easier. The Sealion is covered by BYD's six-year/150,000km warranty as well as its 10-year capped price servicing plan.

Service intervals are every 12 months/20,000km and prices range from $265 up to $1184 for the major eight year/160,000km tune up. Over the first five years, in keeping with most of its rivals, you’ll be paying $1648.

As I’ve written in previous BYD reviews, the biggest question mark hanging over the brand is arguably its long-term prospects. Quite simply, the brand is still too new to know how well it will perform on the used car market.

We also can’t tell you how it will hold up from a reliability point-of-view. We’re not suggesting there’s any doubt over its quality, but each car brand must prove itself reliable and dependable over time, and BYD hasn’t had that time yet.

Mahindra covers the XUV700 with a seven-year or 150,000km warranty which is generous but doesn’t match Kia’s seven-year, unlimited-kilometre term. It also includes seven years of free roadside assistance.

The servicing schedule has a few quirks. There’s a free service at 1500km or one month of ownership, then the next service is at 12 months or 10,000km, whichever occurs first. After that the term is every 12 months or 15,000km, so it’s a little confusing.

There’s four years of capped-price servicing that averages out to about $445 per service. That’s roughly $100 more on average per service than a petrol Mitsubishi Outlander.