Mahindra Xuv 3Xo vs Mercedes-Benz SL-Class

What's the difference?

The fact this is Australia’s cheapest SUV is a massive feat for the Indian brand. It also has so much standard kit so this is even more surprising.

In many ways the XUV 3XO is better to drive than its rivals. The three-cylinder turbo engine has plenty of charm and moves this car along with ease, the car feels confident and composed out on the open road, and there aren’t any bings and bongs from intrusive safety systems.

However, things aren’t perfect. I wish the steering column offered reach adjustment, the steering feel wasn’t so inconsistent and the lane-keep assist wasn’t so hands-on.

If you can overlook these quibbles, this tiny Mahindra is an outstanding value buy if you’re considering a first new car.

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

The SL's overall score is somewhat skewed by everyday concerns, and rules are rules - an average punter will find the price of this car somewhat confusing and the devil-may-care attitude to fuel consumption bewildering.

If neither of these things are a problem, then the SL63 makes plenty of - well, not sense, because it's not a particularly clever or considered car - but it fills a niche that not so long ago we all thought would go the way of the dodo.

The fact it sells so few examples is betrayed by some of the cabin amenities and the fact that Mercedes hasn't put much effort into reducing the car's weight to improve its consumption or sharpen up the handling.

The fact it still exists at all is pretty damn cool, though, and for certain people an SL63 purchase is the culmination of a lot of hard work.

If it is your dream car, the SL63 won't disappoint. Everyone who rode with me said it was mightily impressive, but you've got to really want it. When you're not far off buying a Ferrari California T or Aston Martin V12 Vantage S for the money, you'll need a real yearning for the three-pointed star to go this way. And if you do, good luck to you - you've probably worked quite hard to get here.

From outside it’s surprising just how small this SUV is. At just under four metres long, the XUV 3XO is shorter than a Mazda2, for example.

The reason for this is because in India there are tax breaks for vehicles under four metres long. The Ford EcoSport, sans the tailgate-mounted spare wheel, was another SUV that met this requirement.

As a result of being so short, this has made the rear overhang virtually non-existent. It’s a strange look, especially because the bonnet is so much longer.

Even though the XUV 3XO is based on the KGM Tivoli (formerly SsangYong Tivoli), which was briefly sold in Australia, you’d be hard-pressed to find visual similarities. The former looks more modern from the outside and has more visual interest with the chunky wheel-arch cladding and diamond motifs.

At the front it’s hard to not see the face of a sad panda. The LED headlights are big and plunge down the front fascia, giving it a droopy and sleepy appearance. It’s not helped by the thick black bar connecting them.

Around the side the diamond-cut alloy wheels are a nice touch, along with the contrast black-painted roof on this AX7L tester.

The rear end is a little on the flat side, though the badging is tasteful. I’m not a fan of the full-width LED light bar, however, as it’s an overdone design cue now.

Inside I appreciate the mix of both old-school and new-school. There are dual 10.25-inch screens ahead of the driver for the digital instrument cluster and touchscreen multimedia system, as well as plenty of physical buttons and knobs for shortcuts and the climate controls.

For such an affordable car I’m surprised how many soft-touch finishes there are in this car. In the AX7L you get an extended use of synthetic leather on the door cards and dashboard, which helps make for a pseudo-premium look and feel.

However, one of my biggest gripes with the XUV 3XO interior is the amount of glossy piano black. It’s on the dashboard, centre console, door cards and even the steering wheel.

This may look cool and slick when you pick the car up from the dealer, but it shows up dust quickly and then gets scratched when you try to wipe it clean. Our tester had fewer than 1000km on the odometer and the centre console was already scratched to the wazoo.

The SL has always been completely unapologetic about its size and seems to be designed to accentuate rather than hide its length and width. The long bonnet screams power and prestige, and get out of my way, and is reminiscent of the little-loved McLaren SLR project of some years ago.

The size of the Mercedes logo on the huge front grille leaves you in little doubt about the brand of car that’s about to pass you at speed and some might say (okay, I would) that its large surface area is a little vulgar.

Like the SLR, the design doesn't seem to have a particularly cohesive strategy, with a number of Mercedes elements from around the traps that climb over each other. Roof up it looks awkward because of the gigantic posterior while with the roof down it looks overly long and, again, tail-heavy.

Folding hardtops are notoriously cumbersome and need a lot of room to hide them, but the silent operation is something to behold.

Elements that are worth deleting if possible are the dodgy 'Biturbo' badges. It's that kind of bling that gets people raising their little finger at you.

Given this SUV is tiny, I’m blown away at how much interior space it has.

Up front both the seats are manually adjustable, which is to be expected at this price point. Despite this, they’re still comfortable and offer an elevated driving position which is something SUV buyers seek.

In front of the driver is a leather-wrapped steering wheel which feels nice in the hand. While it offers tilt adjustment, it disappointingly doesn’t have reach adjustment. This is frustrating if you’ve got long legs and short arms, like myself.

The 10.25-inch digital instrument cluster has an overall dark and minimal look, but you can cycle through a range of informative views. There’s even one that allows you to display a full-width map.

Moving across, the 10.25-inch touchscreen multimedia system appears to be snappy enough. I’ve experienced fewer glitches in this car than in previous Mahindras I’ve driven.

I like the physical shortcut buttons underneath the touchscreen because it allows you to jump around to key sub-menus a lot easier.

As standard there’s both wired and wireless Apple CarPlay and Android Auto connectivity. With my iPhone 15 Pro Max the connection was flawless and only dropped out during known interference points.

This AX7L spec comes with a seven-speaker Harman Kardon sound system which gets this tiny car booming. The subwoofer in the boot is so powerful it almost feels like overkill.

In terms of storage up front there are two cupholders, big door pockets with two bottle holders, a centre armrest and a cooled glovebox. There’s also a USB-A port, 65W USB-C port and a wireless charger.

Moving to the second row there’s a decent amount of space for adults to sit behind adults. You could easily fit two adults along the rear bench, though pushing it to three would get a little too squishy.

Second-row amenities include rear air vents, a USB-C port with a phone slot, as well as a fold-down armrest with cupholders.

At the back there’s a manual tailgate, which is to be expected at this price point, but finding the trigger to open it is a little tricky. It’s a small button that’s hidden away.

Once the tailgate is open, the amount of boot space on offer is generous. Mahindra claims there’s 364 litres with the rear seats upright.

While the loading lip is high, the boot area is deep and wide. Unfortunately there’s no cargo cover available as standard, which means you’ll need to be careful what you boot back there.

Under the boot floor there’s a space-saver spare wheel, which is fantastic peace of mind if you travel long distances away from tyre repair shops.

“Practicality” is about as relevant to this car as a code of ethics is to a drug dealer or a contract killer, because the SL63 buyer is hardly worried about cupholders and boot space. For what it's worth, there are four cupholders in the two-seater cabin (which might explain why owners aren't worried about their liquid carrying prospects) and a minimum boot space of 364 litres and a maximum - with roof up - of 504, which is actually not bad.

Cleverly, there's a little robot-operated luggage cover inside the deep boot that stops your gear from being crushed when the roof goes down.

There's also space in the long doors where you might secrete a bottle of wine that would get a NSW Premier fired if he thanks you for it, and a bin in the console to hide your phone.

It’s difficult to ponder the idea of value when a car is already approaching $400,000 at a rapid rate even before you start piling on the options. On the plus side, for a list price of $368,715 you do get an extremely long list of standard equipment.

The SL has always been completely unapologetic about its size.

Edited highlights include leather on almost every available surface, heated and cooled electric seats with a fan heater for your neck, a B&O stereo that will shatter the windscreen on request, aluminium trim that's real aluminium (mostly), Active Ride suspension, sat nav, dual-zone climate control, active cruise, LED headlights and a huge swag of safety gear.

The 12-speaker stereo also has DVD, limited smartphone integration via Mercedes' COMAND system, a seven-inch screen and, of course, Bluetooth.

All variants are powered by a 1.2-litre turbocharged three-cylinder petrol engine that produces 82kW of power and 200Nm of torque.

This is mated to an Aisin-sourced six-speed torque-converter automatic transmission with drive sent to the front wheels only.

The SL63 is powered by Mercedes’ increasingly famous V8, with two turbos along for the ride to add oomph and cut the car's famous consumption, at least slightly. The 5.5-litre unit produces a massive 430kW and a scarcely believable 900Nm of torque.

All of that heads rearward via a seven-speed dual-clutch transmission that helps sling the 4.6m, 1848kg machine to 100km/h in 4.1 seconds.

Mahindra claims the XUV 3XO has a combined urban/extra-urban fuel consumption of 6.5L/100km.

During my testing, however, I achieved a real-world fuel consumption figure closer to 6.2L/100km, which is better than the claim.

All XUV 3XOs have a 42L fuel tank that Mahindra claims can take 91 RON regular unleaded petrol, but 95 RON premium unleaded petrol is recommended.

With my as-tested fuel consumption this means the theoretical driving range from a full tank of petrol is around 675km.

Much as is the case with the price, there's no real way to soften the blow here - the SL63 drinks like a footballer on Mad Monday, except it does it every day. The official combined cycle figure of 10.2L/100km is quite easy to double, as we did, averaging 21L/100km in mostly flowing suburban traffic. In the car’s defence, the accelerator pedal spent a good deal of time near the firewall.

The SL does have stop-start to help reduce its considerable environmental impact.

Behind the wheel, the Mahindra XUV 3XO feels refreshingly old-school.

The 1.2-litre turbocharged petrol engine does seem like it would be underpowered, but in practice it’s completely adequate. Peak torque comes on tap from 1500rpm so it doesn’t have to work too hard at all.

It’s fun hearing the noise the three-banger makes when under the boil. You don’t hear it much though because the revs are typically kept down low to minimise fuel consumption.

The key reason why this car feels old-school is the six-speed torque-converter automatic transmission. It’s nice to not drive an affordable everyday car that doesn’t have a continuously variable transmission (CVT) or dual-clutch automatic transmission as these can suck the life out of a car or be jerky.

The gear shifts in the Mahindra are sometimes docile, but are smooth and measured. It just operates like a regular car that doesn’t require you to rewire your brain to drive.

There are three drive modes to choose from. They’re hilariously called ‘Zip’, ‘Zap’ and ‘Zoom’. These correspond to Eco, Normal and Sport, respectively.

While I did eventually get used to driving in the ‘Zap’ mode, it felt a little snoozy at points, taking a beat or two to get the car accelerating with traffic. You can sidestep this with ‘Zoom’ which feels much more lively. If you activate cruise control or restart the car, though, it defaults back to ‘Zap’.

The XUV 3XO makes the most sense in the city where you’re able to use its tiny exterior dimensions to navigate tight urban carparks and narrow laneways with ease.

It almost became a challenge for myself to find the smallest parking spot I could slot this car into. As standard on this AX7L there are front and rear parking sensors, as well as a surround-view camera system.

Where this car is let down, however, is the steering feel. It’s incredibly light at low speeds and then as the speed builds it gets very heavy. So much so it feels like I’m getting an arm workout.

Unlike some of its rivals, there is still a semblance of feel through the steering wheel, but this drastic change from light to heavy steering weight is too stark. Somewhere in the middle would be nice please.

Something Mahindra is very good at is developing a comfortable suspension tune and this car is no different. It can tackle pimply urban road imperfections and speed bumps with no problems whatsoever.

Out on the open road this car surprised me. It feels like a much larger car than it actually is and doesn’t get blown around in the lane like small cars can.

The three-cylinder turbo-petrol engine remains confident at higher speeds, though if you frequently travel up hills the fuel consumption will skyrocket. There’s also a bit of road noise, which is to be expected when a car is this small.

For the most part the suspension does a fantastic job at rounding out road imperfections, but bigger bumps or potholes can unsettle the car. It’s not helped by the larger 17-inch alloy wheels.

Out in the twisties this tiny SUV is fairly agile. It’s not the sportiest thing out there by a vast degree, but it remains planted and solid even when pushed into harder corners.

Lastly, another point that makes this car feel old-school is the lack of obtrusive bings and bongs from the safety systems.

Sure the parking sensors can be a little over-the-top and the traffic sign recognition takes over the entire digital instrument cluster when it picks up a new speed limit, but having no driver attention monitor and intelligent speed limit assist is refreshing.

It’s not all perfect however as the lane-keep assist is too hands on for my liking. It activates from 60km/h and is quite overt in how it directs the car through bends.

There are a number of impressive things about the way the SL drives. Firstly, astronauts will be familiar with the galactic thrust of the V8. It seems endless, seamless and ready to sling the big coupe into the outer atmosphere. Few engines of any kind can match the relentless go on offer in the SL and much of the credit should go to the seven-speed twin-clutch transmission.

When you jump on the brakes and shift down, the exhaust keeps the show going with angry crackles and pops.

Containing a torque figure like the twin-turbo V8's requires a lot of electro-trickery to stop you from being launched off the road. The great thing about all that stuff is that it works unobtrusively and smoothly.

Mashing the carpet in an SL without traction control would create much sound and smoke but little forward progress, such is the twist on tap. The SL has a range of modes from full-nanny (which is meant to keep you on the slippery Alpine road you've chosen to get you to some Swiss ski resort) while turning the dial all the way around to Race loosens the bonds.

It's in this mode you'll have the most fun and it does seem that the intermediate settings are a bit of a waste of time. Race mode does little to diminish the amazing ride quality provided by the active suspension setup, but relaxes the reins on the huge rear tyres. Exiting roundabouts is suddenly a huge laugh, with the tail cheerfully breaking traction and the two-mode exhaust thundering in a most pleasant way.

Better still is that when you jump on the brakes and shift down, the exhaust keeps the show going with angry crackles and pops, with more on the way when you lift off. There's little to match the aural pleasures of a properly tuned V8 and Mercedes has resisted the temptation to quieten it down on the outside and generate a fake noise for the inside. Although that would be stupid in a convertible, if you think about it.

The SL63, despite its AMG badge, isn't about all-out handling, of course. The Ferrari California would definitely show it how it’s done on a winding country road. The SL is more about flow, building momentum and rarely shifting down to second gear. The monstrous torque is enough to keep things rolling but should you wish for a bit more of the exhaust bellow, second is there for the taking.

Hustling the big convertible feels wrong, not because it can't do it, but because it's not really what it's for. Having said that, it offers a kind of fun that nothing else on Earth will provide, not even a Bentley GTC.

With the roof up, the SL63 is a quiet place but not remarkably so. The huge sticky tyres do the cabin's hush no favours, with an annoying roar on a wider range of surfaces than you might expect.

Roof down, it's hardly a paragon of virtue. A lot of wind noise reaches the cabin, even well below the huge speeds the SL can reach. So if you want to talk, it's windows up you'll need to deploy the mesh screen that bridges the roll hoops.

Six airbags, ABS, stability and traction controls, blind-spot sensor, lane-departure warning, brake assist, active safety bonnet, lane-keep assist, driver attention detection, AEB.

Like other current Mahindra models, the XUV 3XO is covered by a seven-year, 150,000km warranty with seven years of roadside assistance.

Logbook servicing is required every 12 months or 15,000km, whichever comes first, though the first service is required after 12 months or 10,000km.

The first seven services are capped-price and total $1994. This averages out to $284.85 per service.

The SL63 is covered by Mercedes' three-year/unlimited kilometre warranty. And, er, that's it.