New Audi A7 Sportback & Mercedes-Benz CLS vs BMW 6 Series GT

Mercedes-Benz set the trend for four-door coupés with the original CLS. Can the latest model continue to lead the way ahead of its German rivals?...

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What Car? team
01 June 2017

Our verdict

This market usually values style over practicality; we know that. But we don’t dish out points for looks; that’s for you to decide. We do, however, accept that the 6 GT looks kooky to many people; our Twitter desirability poll proved that, with it receiving the lowest number of votes.

But even if you were to ignore space and practicality completely, the 6 GT still racks up the most stars, including in key areas such as infotainment, costs and equipment. Factor in the huge boot and lounge-like rear seating and it simply wins by a bigger margin.

If the 6 GT still isn’t for you (and we’d understand why), the A7 is your best bet, due in part to its exquisitely made interior and superb long-distance cruising credentials. The CLS is close behind, though, and thanks to its seriously impressive diesel engine, tidy handling and cocooning cockpit, it’s the most appealing for those looking for something a little more sporty.

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1st – BMW 6 Series GT

New Audi A7 Sportback & Mercedes-Benz CLS vs BMW 6 Series GT

For Brilliant infotainment; cheap in this company; very practical; high-quality interior

Against Stodgy handling; divisive styling

Recommended options Two-axle air suspension (£1670); adjustable lumbar support (£275)

Rated 4 out of 5

Read our full BMW 6 Series GT review

Find a great BMW 6 Series GT deal

2nd – Audi A7 Sportback

New Audi A7 Sportback & Mercedes-Benz CLS vs BMW 6 Series GT

For Classy interior; smooth high-speed ride on optional air suspension; practical boot

Against Annoying gearbox; so-so infotainment; poor rear space

Recommended options Adaptive air suspension (£2000); increased fuel tank (£110)

Rated 3 out of 5

Read our full Audi A7 Sportback review

Find a great Audi A7 Sportback deal

3rd – Mercedes-Benz CLS

New Audi A7 Sportback & Mercedes-Benz CLS vs BMW 6 Series GT

For One of the best diesel engines in the world; enjoyable handling; eye-catching interior

Against Ride is firm and there’s road and suspension noise; cramped rear space

Recommended options Premium Plus Pack (£3895)

Rated 3 out of 5

Read our full Mercedes-Benz CLS review

Find a great Mercedes-Benz CLS deal

Specifications: Audi A7 Sportback 50 TDI S Line

Engine size 6cyl, 2967cc, diesel

List price £57,840

Target Price £57,840

Power 282bhp @ 3500-4000rpm

Torque 457Ib ft @ 2250-3000rpm

Gearbox 8-spd automatic

0-60mph 6.1sec

Top speed 155mph

Gov't fuel economy 48.7mpg

CO2 emissions 150g/km

Specifications: BMW 6 Series GT 630d M Sport

Engine size 4cyl, 1618cc, turbo, petrol

List price £56,140

Target Price £51,966

Power 261bhp @ 4000rpm

Torque 457Ib ft @ 2000rpm

Gearbox 8-spd automatic

0-60mph 6.0sec

Top speed 155mph

Gov't fuel economy 49.5mpg

CO2 emissions 150g/km

Specifications: Mercedes-Benz CLS 400d AMG Line

Engine size 6cyl, 2925cc, diesel

List price £59,855

Target Price £58,930

Power 335bhp @ 4400rpm

Torque 516Ib ft @ 1200-3200rpm

Gearbox 9-spd automatic

0-60mph 5.0sec

Top speed 155mph

Gov't fuel economy 47.9mpg

CO2 emissions 156g/km

Read more: The best luxury cars >


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