2019 Mercedes-Benz S400 Reviews

You'll find all our 2019 Mercedes-Benz S400 reviews right here. 2019 Mercedes-Benz S400 prices range from $98,120 for the S-Class S400 D L to $112,750 for the S-Class S400 D L.

Our reviews offer detailed analysis of the S-Class's features, design, practicality, fuel consumption, engine and transmission, safety, ownership and what it's like to drive.

The most recent reviews sit up the top of the page, but if you're looking for an older model year or shopping for a used car, scroll down to find Mercedes-Benz S-Class dating back as far as 2014.

Or, if you just want to read the latest news about the Mercedes-Benz S400, you'll find it all here.

Mercedes-Benz S400 Reviews

Mercedes-Benz S560 2018 review: snapshot
By Matt Campbell · 15 Dec 2017
The mid-range model in the Mercedes-Benz S-Class 2018 range is the S 560, which is the only model in the range to be available in both short- and long-wheelbase variants.
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Mercedes-Benz S450L 2018 review: snapshot
By Matt Campbell · 15 Dec 2017
The entry-point to the petrol-powered models in the Mercedes-Benz S-Class 2018 range is the S 450 L.
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Mercedes-Benz S400d L 2018 review: snapshot
By Matt Campbell · 15 Dec 2017
The highest-spec diesel model in the refined Mercedes-Benz S-Class 2018 range is the S 400 d L - and it also happens to be the most affordable long-wheelbase variant in the mix.
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Mercedes-Benz S350d 2018 review: snapshot
By Matt Campbell · 15 Dec 2017
The starting point in the Mercedes-Benz S-Class 2018 range is entry-grade S 350 d, which is $195,900 plus on-road costs.
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Mercedes-Benz S-Class 2018 review
By Matt Campbell · 15 Dec 2017
The 2018 Mercedes-Benz S-Class wants you to exercise, listen to Beyonce and get a massage. All at once. What's the deal?
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Mercedes-Benz S-Class 2017 review
By Tim Robson · 25 Jul 2017
The Mercedes-Benz S-Class has done more than any other car to improve vehicle safety, and this mid-life update goes some way towards restoring it to its rightful place at the top of the tech tree.
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Mercedes-Benz S-Class S350 2014 Review
By Peter Barnwell · 09 Jan 2014
It's one of the most recognisable cars on the road -- an imposing presence usually found at airports and their environs and in upmarket suburbs around town.The S model name appeared first in 1972 in the W116 series which was the first car with ABS. This breaking technology trend has continued through each subsequent S-Class which has ushered in new technology like cruise control, crumple zones and air bags among a retinue of other now almost ubiquitous features. Now, there's a new S-Class which makes a quantum leap ahead in technology terms.DESIGN / STYLINGS-Class is a four or five seat sedan with stately proportions and is available here in three model variants, the V6 diesel 350Bluetec, the petrol V8 500 and the petrol V8 63AMG with long wheelbase versions available on all but the 63. It has a distinctive look this time around with touches of Maybach ultra-limo about its flanks. It retains a star motif on the bonnet (not the grille) like a gun sight and the roofline is in the curving coupe idiom.The rear end tapers in giving a smaller than expected appearance from behind while the beltline is high punctuated by dynamic style lines.  Complex, high-tech LED headlights give S-Class an earnest-looking front. Up to 95kg has been sliced from the S-Class hybrid alloy/steel body but it still comes in close to two tonnes in the lightest variant. Super low drag aerodynamics rate Cd 0.24 which contributes to the nearly silent interior.ENGINES / TRANSMISSIONAll three engines have a seven-speed auto transmission and all offer superlative performance with relatively low fuel consumption. The 350 has a 3.0-litre turbo diesel with 190kW/620Nm output and an incredible 6.0-litres/100km fuel economy.The 500 is a 4.7-litre biturbo petrol V8 with 335kW/700Nm and 9.2 litres/100km economy while the 63 runs a 5.5-litre biturbo petrol V8 (same as E63) with 430kW/900Nm and 10.2-litres/100km. The 63AMG differs with an AMG Speedshift seven-speed auto designed for high performance.Possibly one of the most interesting features is so called Magic Body Control that scans the road ahead with a camera and adjusts the suspension according to the road conditions -- in advance.SAFETYSafety equipment is vast and there's even a pedestrians warning through the night vision system that automatically flashes the headlights.ON THE ROADGet in and it's a whole new world with possibly the world's biggest in-car wide-screen, virtual instruments with night vision as standard and a new two spoke, multi-function wheel. There's an integrated dash with door trims forming one unbroken sweep from side to side, and a number of  different fascia media are used.The high quality interior is lounge-like, classy and ultra luxurious, especially in the rear seats. It's a cavern of high end components like Burmester audio, sumptuous leather upholstery, telematic control, on board WiFi hotspot for the internet, seven ambient lighting choices, luxury head restraints.Ouside there's a hands free boot opening/closing, panoramic glass sunroof, adaptive high beam, 360 degree camera view from four cameras, active park assist and a swag of safety and driver assist features. There's even climate control seats for added comfort. We were chauffeured in the back seats and also drove the new S-Class and as expected, you don't want to get out.From the rear seat it's sheer luxury with large reclining seats, individual screens, air conditioning and other entertainments. We drove the 350 diesel and can't see why you'd want anything else. It has excellent performance across the range and is smooth and silent. It's big though with a wide expanse of bonnet in front of you and you know it's a big, heavyweight that can still deliver a somewhat sporty feel.VERDICTS-Class is the recipient of all new Benz technology, cutting edge stuff that's designed to optimise safety, performance, luxury and economy. Costs plenty though starting at $215 grand for the short wheelbase 350 Bluetec.The complete Mercedes-Benz S-Class range is:S350 3.0-litre turbo-diesel four-door sedan: from $215,000 (automatic)S350L 3.0-litre turbo-diesel four-door sedan: from $222,500 (automatic)S500 4.7-litre twin-turbo petrol four-door sedan: from $285,000 (automatic)S500L 4.7-litre twin-turbo petrol four-door sedan: from $310,000 (automatic)S63 AMG 5.5-litre bi-turbo petrol four-door sedan: from $385,000 (automatic)Mercedes-Benz S-ClassPrice: from $215,000 (S350)Engines: 3.0-litre V6 turbo diesel  (190kW/620Nm), 4.7-litre V8 twin turbo petrol (335kW/700Nm)Transmission: Seven-speed automaticEconomy: 6.0L/100km (diesel), 9.2L/100km (petrol)Emissions: 159g/km (diesel), 215g/km (petrol)Safety: Nine airbags (two rear seatbelt airbags optional), radar crash avoidance, lane-keeping, blind zone alert, self parking, up to eight cameras, 12 parking sensorsWarranty: Three years/unlimitedServicing: 12 months/25,000kmSpare tyre: No. Runflats
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Mercedes S-Class vs Audi A8 vs Land Rover Range Rover 2014
By Mat Watson · 09 Jan 2014
The new Mercedes S-Class has some very big shoes to fill because the old one was just so good. It's also got to beat it's traditional rivals like the Audi A8 and Range Rover.
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Mercedes-Benz S 350 and S 500 2014 review
By Paul Gover · 08 Jul 2013
The world's best car is new again for the first time in a decade. The Mercedes-Benz S-Class has just had a complete overhaul, from road to roof, incorporating breakthrough safety and comfort systems that will eventually be commonplace in lesser cars around the globe.At one end the new S-Class is easily capable of driving itself and at the other it provides five different cabin packages with sumptuous goose feather-filled rear headrests.The basic package for the car is still the same - it's a giant, cosseting lounge room on wheels - and it's not going to be any cheaper with starting prices on the far side of $200,000, but it shows what the world's oldest carmaker can do when it unleashes a super-skilled engineering group with a budget that probably tops $1.5 billion.The Benz flagship has been so comprehensively hyped and previewed that it's difficult to write something genuinely new, because we've seen the shape, been lectured on the technology, have trialed most of the safety systems, and are familiar with a range of short and long-wheelbase models that runs from the S 350 BlueTEC diesel up to the S 63 AMG V8 - with detours including an S 500 plug-in hybrid with claimed economy of just a tad over 3 litres/100km.So today, driving out of Toronto into the Canadian countryside, sampling the S 350 and S 500, it's all about the car and the star score for the latest S-Class. "We believe this new S-Class is the best car in the world. Promise delivered," the spokesman for Mercedes-Benz Australia, David McCarthy, tells Carsguide bluntly.There is no plan to change the starting price of $213,428 for the next S-Class. That's the showroom sticker for the current 3-litre BlueTEC diesel, and things ramp up sharply from there to just on $500,000.But there will be compensation when the first of the new cars arrive, in the final quarter of this year. "There will be more standard equipment," McCarthy says. He is not going into details but there is plenty to promise, especially on the safety front with so many active systems including a world-first stereo-camera system than can 'read' the road ahead and then set the suspension to defeat the sort of bumps and railway crossings that normally rattle cars and their occupsants.The range will start with both long and short-wheelbase cars, but the grand plan runs to petrol and diesel hybrids, a plug-in hybrid with fuel economy right down near 3 litres/100km, and then S-Class based coupes and even a six-door super-long Pullman limousine. The only definite non-starter for Australia is the twin-turbo V12-powered S65 from AMG.Where do I start and where do I finish? It would be easy to write a book on the S-Class, as Benz has done, and different people will score different things in different ways. The big emphasis is on safety technology, from that Magic Body Control system to active night vision that can pick people out of blackness - and then illuminate them with a spotlight strobe that knows not to disturb animals - and a range of anti-collision radars that cover the front, sides and even set the pre-safe safety systems for a rear impact. Back-seat passengers are also protected by inflatable airbag belts.There is also a pair of giant TFT display screens in the dashboard, all sorts of mood lighting, sound systems as good as anything you find in a home, and a lighting system - from the headlamps through the cabin to the brake lights - that is completely LED powered.The S-Class has the sort of chunky presence you expect of a high-end luxury car, but it's better resolved than the outgoing car. It's still chunky, and you won't mistake it for anything else, but it shows where Benz is going with its new family of cars and has a strong visual link down to the new A-Class.The nose is helped - ironically - by the latest pedestrian-protection rules, since the grille is now more prominent and more upright. It helps to cushion any impact but it also gives the car more impact.Inside, the design emphasis is on the sort of quality you expect - and deserve - when you pay S-Class money. The leather work is fantastic, the seat styles and shapes - from the basic bench through to the Business Class recliners - is sumptuous and everything you touch has a quality feel.The designers have also freed more space for every occupant, from front-seat head room through to back-seat knee room. And the boot is huge, unless you plan a hybrid with a big battery in the back.The new S-Class must be the world's safest car, and runs well ahead of any NCAP testing. There are airbags and ABS and ESP, of course, but it's all the active safety systems - including the amazing night vision - which make a critical difference. And which must, inevitably, migrate through the Benz family and then out to lesser brands. Mercedes-Benz wants us to call it Intelligent Drive and, for once, that's a fair concession.The new S-Class is very, very quiet. It's also cushy and comfortable. And the technology bends reality in a range of new directions. Both the S350 diesel and the V8-powered S500 get along nicely, with the bigger engine obviously giving a bigger whack away from the lights. And I know they are much more fuel efficient than ever before, rivalling cars at least two size classes smaller.A series of driving demonstrations shows how smart it is, from the anti-collision systems to the way it shines light after dark to the way it can crush a road with Active Body Control. It's absolutely brilliant to relax in the back like some sort of minor five-minute celebrity, too.And, when all the technology is working together, it's easy to see that the S-Class is very close to a car that can drive itself. It still needs line markings on either side, but it can already take the wheel for up to 10 seconds and hold its place in a lane, while keeping a radar-paced gap to the traffic and sitting ready for automatic braking in an emergency. For what it is, the S-Class is brilliant. But then there is the but.That's because it's still a giant dinosaur, even if its dimensions and derivation are cleverely disguised behind multiple layers of technology. It's an old-fashioned car that continues an old-fashioned idea of luxury motoring, and that means it cannot be best of the best.It is clearly better than anything from Audi, BMW or Jaguar, and a true rival for a Rolls-Royce at the top end of the luxury world, and it is going to be a success everywhere in the world. But, these days, we should expect more. Benz has played well, and played hard, but it has still played safe.
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