Mercedes-Benz EQE

The EQE promises to be a sublime cruiser, with class leadership targeted in all areas of noise reduction.

That's very Mercedes - and so should be the feel of the volume EQE 350+ model's 292hp rear-mounted motor, which is linked to single-speed transmission and uses a 96kWh battery offering 431 miles of range.

It's fast too, the 62mph sprint dispatched in 6.5s en route to a high (for an ordinary EV) top speed of 130mph.

There's also a faster dual motor EQE 500 4MATIC derivative which has a combined 408hp motor output, offers 387 miles of range from its 91kWh batteryand makes 62mph in 4.7s.

Inevitably, Stuttgart has also developed a faster Mercedes-AMG 53 4MATIC+ model for those that might want it, complete with 4MATIC 4WD and a range of up to 312 miles.

This offers 625hp and deals with the benchmark sprint in 3.5s.

We'd stick with the mainstream versions, which see the EQE at its best when merely wafting along and making best use of the brand's typically well-engineered brake energy recuperation system.

It's very impressive, possibly even more so than the top AIRMATIC+ air suspension set-up, though that's only fitted to the pricier variants.

Whatever damping system features on your EQE of choice, you'll find that body roll's well controlled considering this car's size and weight - and there's also a surprising amount of cornering grip.

Those wanting to improve things further and prepared to stretch to the top trim levels can benefit from the extra cornering stability of rear-wheel steering - which will also improve your parking turning circle.

Highway refinement's exceptional, but if you don't like the silence, there are various selectable sound programs linked to the ebb and flow of the electric motor - 'Silver Waves', 'Vivid Flux' and 'Roaring Pulse'.

If you happen to be familiar with the EQS, you'll recognise the EQE immediately as its close cousin.

The two cars share the same EVA2 all-electric platform, but the EQE is 270mm shorter, though is still almost 5-metres in length.

Which makes it a touch larger than an E-Class; in fact the dimensions are more similar to the brand's CLS four-door coupe.

There are super sleek aerodynamics - and very big wheels (either 19 or 20-inches).

What's under the panel work is interesting too.

This is the first Mercedes to be built using 100% recycled steel. Traditionally, Mercedes has had an enviable reputation for luxurious interiors and it's something the EQE simply has to get right to be credibly considered in this segment.

Sure enough, what's delivered here is a cabin that manages to blend classic ideas with modern detailing.

There's plenty of screen tech of course - standard models have a 12.3-inch instrument display and a 12.8-inch OLED centre screen.

And the high-set centre console and slab-effect dash seem appropriately futuristic, the latter topped by a narrow vent line highlighted by copper-coloured detailing meant to evoke an electrical theme.

This, together with the thin accompanying ambient lighting strip, flows seamlessly back into the door cards, the joining point in each corner just shy of a silver 'jet turbine'-style air vent.

You get an art deco three-spoke flat-bottomed steering wheel, and on top models, finishing touches like red dash-top double-stitching and intricate Burmester speaker grilles.

You might even like the enormous slab of piano black plastic below the centre screen.

At night, with the elegantly back-lit 64-colour ambient lighting system illuminated, it all feels very high end indeed.

And even more so if you've a top-spec EQE with the brand's Hyperscreen package, which mates the digital instrument cluster with a 17.7-inch central display and a 12.3-inch passenger-side display.

Full-battery platforms are usually more space efficient than combustion ones - and so it proves here.

The EQE has an 80mm longer wheelbase than an E-Class and that really brings benefits in the back for leg room, which is very generous.

But the bench is sited quite low in relation to the floor, so you'll find your knees bent at a slightly awkward angle.

And, as we'd feared, that swooping rear roof line will restrict headroom for taller folk, particularly with the mandatory twin-panel panoramic glass roof fitted.

Boot space is a competitive 430-litres.

You're going to need to think in terms of a price starting point of around £69,000 for EQE ownership; that's for the base EQE 350+ model, which comes in 'Sport Edition', 'AMG Line Edition', 'AMG Line Night Edition Premium' and 'AMG Line Night Edition Premium Plus' forms, with the top three of those trim levels also common to the faster EQE 500 4MATIC (priced from around £83,000).

Obviously, you'll need significantly more for the faster Mercedes-AMG EQE 53 4MATIC+ variant (from around £105,000).

One key cabin ingredient for this car is the 55.5-inch digital MBUX Hyperscreen set-up borrowed from the EQS.

It's a £5,000 option on the 350+ if you choose top 'AMG Line Night Edition Premium Plus' spec; but it's standard on all 500 4MATIC and Mercedes-AMG EQE 53 models. All versions of the EQE get a large dual sunroof, plus there's also a high efficiency particulate filter that works as part of an 'Energising Air Control' system.

In addition, you get privacy glass, heated windscreen washers, LED headlights, a powered boot lid and a reversing camera with parking sensors.

Inside, every EQE gets a pair of large screens as standard; a 12.3-inch 'digital instrument cluster display' and a 12.8-inch centre-dash infotainment 'media display'.

That big middle monitor includes a finger print scanner that can be used to start the car, and save settings to pre-programme elements such as the seating position or radio station to the driver's profile.

But you'll need top-spec for the Burmester surround sound set-up and a head-up display unit featuring augmented reality features.

Top trim's also required for the AIRMATIC air suspension - and for the rear-axle steering set-up, which can reduce the turning circle by up to 1.8m.

The 91kWh and (for the EQE 350+ version) 96kWh lithium-ion batteries can be charged at speeds of up to 170kW, which allows the EQE to gain around 155 miles of range in around 15 minutes.

A charge from a home wallbox will take a little more than 12 hours.

We like the clever choice of different charging programmes - 'Standard', 'Home' and 'Work', each of which allows you to pre-set things like departure time, maximum charge level and air conditioning settings.

There's also a feature that Mercedes calls 'Eco-charging', which lowers the load on the battery during charging in a way that improves the longevity of the lithium-ion cells.

As usual with an EV, you can lower the battery's charge state to a pre-set limit; or delay charging take advantage of off-peak electricity.

As you'd expect, the battery can be replenished on the move by regenerative brake energy, a recuperation system that allows for single-pedal driving on its highest setting. Mercedes makes much of what it calls its 'holistic approach to the battery life cycle', which sees EV batteries taken out of the company's cars at the end of their usable lives and employed in energy storage facilities, rather than being recycled instantly.

The brand says over-the-air software updates that work with the EV-specific navigation system extend the battery's life in-car as long as possible, because they determine the best heating and cooling cycles for optimal performance.

The EQE shows just how much Mercedes is prepared to invest in class leadership in the new segment for all-electric Executive saloons.

Some may struggle a little with the way that aerodynamics rather than character appear to have overly influenced the looks, but in terms of range, technology and cabin wow factor, the EQE is undeniably class-leading. It should feel like a Mercedes to drive too, with class benchmarks targeted in both refinement and silky smooth power delivery.

Choose one of these, then live with it for a bit and you might find yourself wondering why the combustion-engined E-Class equivalent is still on sale.

Once there's price parity between the two cars - which may not be as far off as many think - there's little doubt which of the two models most prospective customers will choose.

The future's arrived.