Skip advert
Advertisement

Mercedes S-Class Hybrid

We review the Mercedes S300 Hybrid, powered with a 201bhp 2.1-litre engine boosted by a 27bhp electric motor

Find your Mercedes S-Class
Compare deals from trusted partners on this car and previous models.
Or are you looking to sell your car?
Value my car
Fast, no-nonsense car selling
Value my car

The S300 Bluetec Hybrid isn’t quite as special from behind the wheel as the S350 Bluetec we drove but its low running costs give it a whole lot more appeal for company car buyers. It still majors on refinement and ride comfort like the rest of the S-Class range but it’s the model that you choose with your head rather than your heart.

Advertisement - Article continues below

When we drove the V8-powered Mercedes S500 last week we gave it full marks, but it’s unlikely to find many buyers in the UK. The four-cylinder diesel-electric S300 Hybrid should prove more popular, but can it deliver the same strong performance and impeccable refinement?

• Mercedes

Mercedes claims this car will do 64mpg and emits just 115g/km. That’s seriously impressive for a car this size, let alone one that has 228bhp. It also means company car buyers in the 40 per cent tax band will pay around £1,500 less per year than owners of the S350 Bluetec.

That power figure comes courtesy of 201bhp from the 2.1-litre diesel and 27bhp from the electric motor. Thankfully the economy figures are achievable, our test car returned 60mpg without too much effort.

• Mercedes S500 review

In terms of refinement, the four-cylinder is nowhere near as smooth as the V6 in the S350 Bluetec, but it is just as quiet, with the engine bay excellently isolated from the cabin. You can pull away around town on electric power if you’re gentle with the throttle, too, giving the Hybrid excellent refinement in creeping traffic.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

S Class

2015 Mercedes

S Class

115,000 milesAutomaticDiesel3.0L

Cash £11,995
View S Class
S Class

2016 Mercedes

S Class

107,000 milesAutomaticDiesel3.0L

Cash £16,995
View S Class
S Class

2019 Mercedes

S Class

135,000 milesAutomaticDiesel2.9L

Cash £21,989
View S Class
S Class

2019 Mercedes

S Class

27,250 milesAutomaticDiesel2.9L

Cash £35,900
View S Class

At motorway speeds you won’t be able to hear the engine anyway, and because there’s absolutely no wind noise at 70mph the noisiest thing you’ll be able to hear is the suspension moving up and down. You don’t get the same surge of effortless acceleration that you find in the S350 BlueTEC or in the S500 but with a 0-62mph time of 7.6 seconds, it certainly feels fast enough.

Advertisement - Article continues below

Thankfully, the added weight of the Hybrid’s battery pack hasn’t spoiled the ride comfort. It may not be quite as pillowy soft over big bumps as an S500 fitted with the Magic Body Control system - that scans the road ahead and prepares the suspension accordingly - but its still glides over imperfections in the road.

It leans a little more in the corners than a Magic Body Control equipped S-Class, though, but stick the suspension in Sport mode and it still feels stable and capable enough on twisty roads.

This was our first chance to try a short wheelbase version of the S-Class, and one with the standard rear seats rather than the fancy First Class style reclining massage seats as part of the Executive pack. There’s no doubting it feels a bit less special as a result, but there’s still plenty of legroom in the back and the cabin is still a work of art. You can always opt for the Individual rear seat pack, which brings seats that recline by 37 degrees, but if you want the full 43.5 degrees you’ll have to opt for a long wheelbase car.

The action of every single compartment opening in the interior feels well engineered, and the leathers, woods and metals used throughout feel extremely high quality. It still feels really hi-tech as well, with ambient lighting throughout and the two large 12.3-inch displays in front of the driver.

Prices for the S300 Bluetec Hybrid are expected to start from around £65,000, which is £2,000 more than the S350 Bluetec. From a driving point of view we certainly prefer the standard V6 diesel but from a financial standpoint, it’s the Hybrid that makes more sense.

See also

• Range Rover review

• Audi A8 review

Skip advert
Advertisement

New & used car deals

Mercedes S Class

Mercedes S Class

RRP £100,390Used from £59,990
Omoda 5

Omoda 5

RRP £23,990Avg. savings £1,481 off RRP*
Volkswagen Golf

Volkswagen Golf

RRP £25,235Avg. savings £2,502 off RRP*Used from £11,800
Skoda Kodiaq

Skoda Kodiaq

RRP £39,025Avg. savings £3,517 off RRP*Used from £12,481
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Jaguar Land Rover on brink of deal to build Chinese cars in Britain
New Chery Tiggo 9 2025 UK review - head on

Jaguar Land Rover on brink of deal to build Chinese cars in Britain

A deal between the British and Chinese brands could see Chery models built using spare JLR capacity
News
29 Jan 2026
The petrol hot hatch isn't dead yet! VW Golf GTI and R to live on
Volkswagen Golf GTI - front corner tracking, low

The petrol hot hatch isn't dead yet! VW Golf GTI and R to live on

Volkswagen is developing the EA888 2.0-litre turbo engine for new emissions regs, meaning new hot hatches are in the works
News
27 Jan 2026
Meet Renault’s new SUV: a Dacia Duster but not as we know it…
Renault Duster - front

Meet Renault’s new SUV: a Dacia Duster but not as we know it…

Posher inside and out and with more headroom, welcome to the upside down world of the Indian Duster
News
26 Jan 2026