Range Rover vs Mercedes-Benz SL-Class

What's the difference?

The Range Rover Autobiography long wheelbase is an outstanding SUV that is not just beautiful to drive but makes family practicality a priority, too, 

The price is reasonable relative to the competition, the features list is long and complementary servicing offers peace of mind.

If you don’t need the third row, I’d consider the standard wheelbase Autobiography even if it does reduce legroom, there’s still plenty of space.

My son stopped short of giving the Range Rover Autobiography full marks "because there are no massaging seats in the second row".     

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.

This fifth-generation Range Rover debuted in 2021 and despite its smooth, modern styling this SUV retains the familiar traditional Range Rover look with the short squared bonnet, flat roofline and tall windows.  

Let’s talk about the wheelbase, because it has a huge impact on passenger space.

We had the long wheelbase which is 3197mm between the front and rear wheels - that’s 200mm more than the standard wheelbase. 

Just look at those stretched rear doors in the photos - this is a go-anywhere limousine, or go-anywhere daycare centre in my case.

The overall length of the long wheelbase Range Rover is 5252mm. That’s big, but the design of this SUV doesn’t make it appear enormous.

What I don't like are the retractable door handles. They take a while to pop out and they look and feel cheap. Land Rover has used these on its other SUVs and if I had time I’d pen a letter asking the company to please stop. I’m sincerely hoping this review will do the same thing. I await your response JLR.

I think the tail-lights are pure genius. The pencil thin design is such a brave move away from the norm where brands are going over the top with LED lighting, and the simplicity is refreshing.

Inside, a traditional-looking Range Rover cabin awaits you with the flat dashboard, the low window sills contrasted by super modern touches like the displays and fully digital dials.

It’s sumptuous, luxurious, but not over the top. Again some people are looking for bling and gimmicks, but you won’t find them here - and I like that. This interior feels solid and substantial, but plush. 

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.

Range Rovers have been a family favourite for decades and they’ve been doing school runs and trips away long before other brands even thought about producing SUVs for families.

So what you’re buying is Land Rover’s decades of knowing how to make a family SUV and you can tell by little things such as, how wide the doors open, how easy it is to get in and out of (even for little kids), the flat floor, the good visibility (thanks to low window sills), and then there’s the space and cabin storage. Stuff other brands seem to be still working out.

The second row seats in the Autobiography have electric sun shades, dual-zone climate control and the window seats are power adjustable and heated.

My eight-year old couldn’t resist playing with his electric sunshade and the seat adjustment, but fortunately the driver has an override switch which let me turn off his 'seat privileges’ as he called it. 

Being the long wheelbase means the rear doors are long and heavy. So while the eight-year old could open them, he had trouble closing them. 

The long wheelbase offers unrivalled legroom in the back and that meant my wife and I could put our own seats back further for our own comfort -even with a baby seat behind us.

Enormous door pockets, a giant centre console storage area, cupholders in all three rows, USB ports, wireless phone charging and in our case an optional domestic power outlet ($130) made this a comfortable, roomy, well equipped cabin.

Sure, the third row isn’t exactly spacious, but I’ve never met one that is. 

The intelligent seat folding system is remarkable. From the boot or side doors you can electronically adjust the second and third rows - either to raise them or lower them so they are flat for storage.

With all seats in place there is 229 litres of cargo space still left in the boot, but with those back seats folded flat you have 713 litres of capacity - and that’s just up to the cargo cover. 

The Range Rover Autobiography has air suspension and this means the SUV can lower itself to an 'Access' height to make it even easier to get in and out.

“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.

The 4.4-litre twin-turbo petrol V8 is a perfect match for the Range Rover Autobiography.

There’s enormous power at 390kW and a colossal 750Nm of torque, but it’s delivered so smoothly and without sounding like Armageddon is beginning.

You might here the engine referred to as the P530. That signifies it’s petrol and makes about 530 horsepower. 

All that grunt means that despite weighing more than 2.7 tonnes, this SUV can hurl itself from a stand still to 100km/h in 4.8 seconds. 

An eight-speed automatic sends the drive to all four wheels. And making this SUV incredibly capable off-road is an excellent four-wheel drive system with a low range gear, plus a maximum ground clearance (thanks to the adjustable air suspension) of 283mm and a wading depth of up to 900mm.

There is a six-cylinder diesel, but if you decide on that instead of the V8 then it's all over between you and me. That’s how good this V8 is.

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.

Now, you’re going to use a lot of fuel. But that’s okay because this will probably be your last petrol car and the next one will be electric so let’s go out with a bang - last drinks at the petrol bar! Land Rover says you’ll use 11.8L/100km.

After a week of punishing my Range Rover with school drop offs, shopping centre car parks, hilly suburbs, motorways and rural roads the petrol pump told me we’d used 19.8L/100km.

I’m not shocked by that consumption. This is a 2.7 tonne all-wheel drive twin-turbo V8 SUV that was almost always ferrying around four people with a pram, garden supplies and shopping in bumper to bumper traffic. A real world fuel test. 

There is that six-cylinder diesel and a hybrid version of the Range Rover, but this V8 engine suits the character of the SUV perfectly - anything else and it’s like eating reduced fat ice cream.

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.

Driving the V8-powered, long-wheelbase, 2.7-tonne, Range Rover Autobiography is a lot easier than it sounds. Really, it’s the Range Rover’s height above sea level which will strike you first.

You’ll lord it over other cars. The length doesn’t come into it - even for parking because the visibility is so good, the steering is so light and the engine is civilised and smooth.  

This is truly an easy and enjoyable SUV to drive, with power and performance whenever you need it. 

There are several drive modes from a 'Dynamic' sporty one, which makes the engine more responsive and suspension firmer, to off-road settings.

Most of the time I left the Range Rover in 'Comfort' mode for the softest ride, but with 530 horsepower lurking in the background ready to jump out and eat up hills and overtaking.

The front seats are wide, comfortable and supportive even after hours of driving. 

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.

The warranty is good with five-years and unlimited kilometre coverage.

There’s also five years roadside assistance and a complimentary five-year/130,000km service plan.

Yep, that's complimentary, as in free servicing for five years. I didn’t believe it myself and called Land Rover to check and was told that it does indeed mean free-of-charge.

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