The Mercedes S-Class is the ultimate luxury limo and a fantastic showcase for cutting-edge technology. There are fewer relaxing experiences than driving an S-Class - the
only thing that can top it is if you're in the back seat, being
chauffeured. Vibrations through the pedals and steering wheel are
non-existent, and even at motorway speeds you won’t hear any wind or
tyre roar.
All the engines are fantastic, but it’s amazing that Mercedes can
offer a diesel-electric hybrid offering more than 60mpg, and even the
standard V6 diesel returns 50mpg. For the ultimate in speed there are
high-performance S63 V8 or S65 V12 AMG versions, or if you want an
S-Class that emits less CO2 than a Toyota Prius there’s the S500 Plug-in Hybrid.
In short, the Mercedes S-Class has set the standard for luxury and
cutting-edge technology for over 40 years - and the latest
sixth-generation car is the best yet.
Our Choice:
Mercedes S350d L AMG Line.
Until the mid-1990s it was famously the case that money was no object
when Mercedes engineers developed successive generations of its flagship
S-Class saloon.
Even after Daimler and Chrysler
amalgamated in the late-1990s and the bean-counters reigned in their
‘over-spending’ engineers, the flagship Mercedes S-Class has remained at
the pinnacle of automotive engineering technology. Each new model has
introduced ground-breaking systems that have cascaded down into lesser
models as they become more affordable.
The tech highlights of this latest model include Magic Body Control
that uses cameras to scan the road ahead for undulations and potholes,
then adjusts the suspension to suit. There’s also a new high-definition
TFT display as part of the instrument cluster, and a highly advanced
Driving Assistance package that keeps the car in its lane and in train
with the vehicle ahead when in cruise control mode.
While the latest S-Class continues to showcase the brand’s hi-tech
developments, sleek new looks means the Mercedes S-Class is more
desirable than ever, plus it has benefitted from a completely overhauled
cabin design.
With a range of powertrains, options and finishes, it’s a package that competes with cars such as the Audi A8 and BMW 7 Series at one end of the scale, and the Rolls-Royce Ghost at the other.
Under the bonnet, the S-Class is available with 3-litre V6 diesel
power in the S350, or a 5.0-litre V8 petrol engine in the S500.
There's also a trio of greener options, namely the S300 which is a
2.2-litre 4-cylinder diesel hybrid with a small electric motor, the S400
h which is the 3.5-litre petrol-powered hybrid equivalent, and the S500
e which is a 3.0 V6 petrol-powered ‘plug-in’ hybrid.
The 6.0-litre V12 of the S 600 is also available if you’re feeling
particularly plutocratic, while the Mercedes-AMG S63 and S65 models are
monstrously powerful 5.5-litre V8 and 6.0-litre V12 machines honed by
Merc’s motorsports division.
Trim levels are relatively straightforward, including an SE
‘standard’ spec and a more dynamic-looking AMG Line. There’s an
Executive spec package bringing more luxury features for rear
passengers, along with a host of additional upgrades and bespoke trim
options as befits a flagship Mercedes model.
Even ‘standard’ SE models are pretty lavishly equipped though, with
LED headlights, air suspension, sat-nav and full leather upholstery all
included. AMG Line cars get more aggressive body kits and larger 19-inch
alloy wheels outside, and alloy pedals and AMG logos among the
highlights inside.
Despite its focus on luxury and refinement, the S-Class is still one
of the most engaging executive limousines on the market. Standard air
suspension gives a wonderfully cushioned ride, while buyers wanting even
sharper driving dynamics can opt for the £4,340 Magic Body Control
system, which reads the road ahead and adjusts the car's set-up
accordingly.
There’s barely any wind or road noise, while the standard
air-suspension effortlessly smooths out bumps – although the 19-inch
wheels can crash into potholes.
Yet this comfort doesn’t come at the expense of agility. The steering
is quick and well weighted, plus there’s lots of grip. Selecting Sport
mode stiffens the standard adaptive dampers to reduce body roll.
On the road, the new S-Class doesn’t feel as urgent as the Audi A8,
but it still packs plenty of overtaking punch across the spectrum of
powertrains. The brakes are strong, too, with a positive and progressive
pedal feel.
Charge it up for two hours through a household socket, and driving
the S500 Plug-in on electric power is one of the quietest and most
refined experiences anywhere. But flex your right foot and the V6 engine
wakes up to deliver effortless overtaking power when you need it.
The high-power AMG models give this limo supercar-rivalling
performance. They come in long-wheelbase form only, and while they're
not the last word in sharp handling, you'll be surprised by how well
they corner considering the car's sheer size.
The S350 diesel will make up the majority of S-Class sales, and it's
our pick of the range, thanks to its super smooth and quiet engine
combined with seriously quick in-gear acceleration that proves
refinement doesn’t come at the expense of performance.
Despite a hefty 1,975kg weight and the seamless seven-speed automatic
box’s lengthy gears, 0-60mph takes just 6.8 seconds for the S350 but it
genuinely feels much faster than that.
The other diesel option is the S300 BlueTEC hybrid, which combines a
frugal four-cylinder diesel and electric motor to blend the effortless
performance limousine buyers expect with supermini running costs.
The S300 hybrid nudges just over 2,000kg due to the added weight of
the battery but performance is still brisk, hitting 0-62mph in 7.6
seconds. While its real-world performance is impressively punchy, the
S300’s hybrid system can’t run in electric-only mode for long, and even a
small squeeze on the throttle pedal will cause the diesel engine to
rumble into life.
If you can stretch to it, the S500 Plug-in is a remarkable machine,
letting you travel up to 20 miles on electric power alone before the
3.0-litre twin-turbo V6 cuts in. With both power sources working
together, performance is almost on a par with the V8-powered S500. The
hybrid does 0-62mph in 5.2 seconds, while the V8 powered car knocks it
off in 4.8.
If you want a limousine with real supercar credentials, the AMG S63
has a twin-turbo V8 and can manage 0-62mph in 4.4 seconds, while the V12
twin-turbo S65 is a tenth of a second faster.
With prices starting in excess of £65,000, the S-Class isn’t exactly
cheap to buy and if you get a bit friendly with the options list, the
price can rise to well over £100,000. However, despite the price tag the
S-Class won’t cost you the earth to run.
The S300 BlueTEC Hybrid boasts fuel economy of 61.4mpg and CO2
emissions of 120g/km. However, the frugal diesel hybrid plays
second-fiddle to the S500 Plug-in Hybrid, which returns 100.9mpg and
65g/km under the official testing regime.
Depending on how you use it, of course, those figures could be much
higher – or indeed lower. For example if your commute is less than 20
miles and you’ve somewhere to charge the car at either end, you can get
to work and back without needing a drop of fuel. Use it for longer
journeys though and the economy will plummet, especially if you delve
into the available performance.
Offering the best blend of economy, performance and price is the S350
BlueTEC, which feels seriously quick while still emitting just 146g/km.
The new S63 AMG is more efficient than ever, but still only manages a
meagre 27mpg combined as a consequence of its enormous power and
two-tonne bulk, even though it does have a carbonfibre boot liner as a
nod to weight-saving.
Externally, the S-Class benefits from imposing styling with neat
design details. Yet despite its vast external dimensions, the Mercedes
disguises its bulk well thanks to its sweeping roofline and carefully
sculpted lines cut into the flanks.
A bold grille, topped by the brand’s trademark three-pointed star,
swept-back all-LED headlamps and tastefully applied chrome trim add a
dash of glamour, while AMG Line trim brings racy looking 19-inch alloy
wheels and a subtle bodykit.
The Mercedes’ interior is even more impressive as it’s beautifully
built, supremely comfortable and plushly appointed. The wide dashboard
features a pair of 12.3-inch TFT screens – one for the sat-nav,
infotainment and energy use, the other for the speedo, rev counter, trip
computer and optional night vision display.
Other highlights include the metal-finish eyeball vents for the
air-conditioning, the precise action of the switchgear and the intuitive
COMAND rotary controller.
As you’d expect, the fit and finish is flawless, while the materials
are all top-notch. Lustrous Black Poplar wood trim covers the dashboard,
centre console, door trims and steering wheel, plus there's a £1,740
soft Nappa leather trim option for lower spec cars.
As you’d expect, quality is the watchword for the S-Class infotainment systems.
All models come with the 12.3-inch high definition screen, sat-nav,
digital radio and single CD/DVD drive as part of the COMAND Online
system.
You also get Bluetooth and a WLAN hotspot facility, but if you want
to use Facebook and various on-board apps via the Connect Me package
you’ll need to tick an option box. Other options include a rear seat
entertainment system with a pair of 10-inch screens, and of course a TV
tuner.
If you really want to push the boat out on the audio front, try the
Burmester high-end 3D Surround Sound System which has 24 speakers, a 24
channel amplifier and a total output of 1,540 watts.
It’s hard to imagine a car that’s actually more comfortable than a Mercedes S-Class, although more rarefied brands like Rolls-Royce and Bentley can provide a more genuinely bespoke luxury feel.
But for comfort the big Merc is near peerless, with superlative
on-road refinement, a silken ride quality, a living-room-sized cabin
with superlative seats that will even massage you if required, plus
fabulous entertainment systems and internet connectivity so driver and
passengers want for nothing.
If you have to drive it yourself, then an array of sensors and
cameras take care of close quarter manoeuvres in town, while out on the
road you can let the clever cruise control and other aids share the
load.
The S-Class in standard length is 5,116mm long, but there’s a
long-wheelbase version with a 13cms extension in the rear passenger
compartment. That said, unless you’re after the best-selling S350d you
can’t pick and choose, so which body you get depends on the model. Apart
from the S350d, only the AMG S63 and S65 come with the shorter body, so
all the other versions come in the L guise.
In case you are compelled to have the biggest car in the car park,
it’s worth noting that the S-Class in standard length is 15cms shorter
than an Audi A8, and 28cms shorter than a Rolls-Royce Ghost. It beats the BMW 7-Series by 4cms though.
Given the S-Class’s luxury car status, it’s no surprise to find most of
the space in the cabin is reserved for rear seat passengers. There’s a
trio of three-point belts for the rear bench, but most buyers will treat
this car as a four-seater, and Mercedes offers an optional two-seater
rear seating set-up for even more luxury.
Rear head and legroom is generous, while the £4,335 Executive Rear
Package adds a reclining function, powered blinds for the side and rear
windows and ventilation for the seats. There’s also plenty of storage
space, including the fold-down rear armrest that includes a pair of
cup-holders and neat lidded cubby, while fold-out tables make the car
the perfect office space.
The Mercedes features a useful 510-litre boot – although the optional
£1,130 fridge compartment reduces capacity by 40 litres. Without it, the
Merc’s luggage space is a little bigger than the Rolls’ and BMW’s, and
matches the Audi’s exactly.
Mercedes has forged a strong reputation for building durable cars, and this is backed by an impressive 11
th place in our Driver Power 2015 satisfaction survey, although the brand has dropped a place since 2014.
More worryingly perhaps, at least as part of a bigger picture, is the
manufacturer’s score for reliability alone, which is rumbling along at
26
th out of 30-odd contenders.
For build quality, the Mercedes brand is rated 10
th. Not bad, but worth noting Lexus, Jaguar, Porsche, Audi, BMW and Volvo are all luxury or premium brands that do better. Skoda, Honda and Subaru are not luxury brands, and they score better too.
It’s the lesser Mercs that seem to be letting the side down though,
so we’d be amazed to hear of anyone picking fault with the build quality
of an S-Class.
The latest S-Class hasn’t been tested by EuroNCAP, but the last one
scored a maximum five stars and we’d be amazed if Merc’s technology
flagship failed to do the business this time around.
As you’d expect, there's plenty of standard safety kit, including
eight airbags, a traffic sign recognition camera, a driver drowsiness
monitor and a stability control system which incorporates Curve Dynamic
Assist and Crosswind Assist.
The S-Class can also be fitted with the £2,300 Driving Assistance
Package, which adds blind spot monitoring, lane keep assist and adaptive
cruise control, plus a £2,250 night-vision camera and novel £1,230 rear
seatbelts that feature integrated airbags. If you want unbeatable
safety – and can afford to pick up the bill – then the big Merc has it
covered.
The standard Mercedes warranty applies to the S-Class, which means three years cover and no mileage cap.
Mercedes’ Service Care pack guarantees the cost of routine
maintenance for up to four services. The plan is flexible depending on
mileage, but if you drive between 15,000 and 30,000 miles a year
Mercedes will cover you for £55 a month – including 4 services over
three years.
If you simply want an annual service once a year for two, three or
four years, there’s another monthly plan that costs £41. Either way,
it’s not a bad deal considering the price of the car, especially when
you consider a three-year deal for the smallest Mercedes A-Class is £32
per month.