In second generation form, the Mercedes GLC promises to be an even more tempting proposition in the upper mid-sized premium SUV segment. Jonathan Crouch drives it.

Ten Second Review

The GLC brings a bit of Mercedes polish to the premium part of the upper mid-sized SUV segment and this second generation model is a significant step forward from the original. The whole of the mainstream engine range has been electrified and infotainment media connectivity has taken an equally large step forward. Plus efficiency, refinement and build quality represent other strongpoints. It's a very complete package.

Background

The GLC has been quite a success story for Mercedes. This model line didn't even exist until 2015. Since then, more than 2.6 million of them have been sold and in 2021, the 'X253'-series MK1 version's last full year on sale, over 270,000 GLCs found new owners globally; enough to surpass the C-Class and make this model the brand's overall best seller. So you can understand the high expectations in Stuttgart for the successor 'X254'-series design, which like its predecessor shares an awful lot with its C-Class showroom stablemate. This time, the GLC is bigger, all the engines are electrified and, like the 'C', there's a completely redesigned cabin that sets fresh segment standards. There's the same MRA steel and aluminium platform as the C-Class. This GLC is built in the brand's flagship Sindelfingen factory and is described by the company 'as the most important car in our line-up'. Time to brief you on it.

Driving Experience

What are your expectations in terms of driving a premium upper-sized mid-level luxury SUV? A reasonably commandingly and luxurious seating position? Plenty of pulling power? Impressive refinement? As before, the GLC delivers all of these things. We're a little disappointed that it remains somewhat disengaging to drive, plus ride quality is on the firm side and can't be embellished with the AIRMATIC air suspension system that Mercedes offers in other markets. On the plus side though, lie exceptional refinement and un-bettered autonomous drive tech, if that's what you're into. There's even an 'Off Road' drive mode for rougher tracks, though we doubt many owners will ever use it. Most significant is the news that this MK2 model gets a completely revitalised range of engines, which in the mainstream part of the range now have 48V 'EQ Boost' mild hybrid tech in their diesel forms as well as their petrol ones. With every single variant in this second generation line-up, you'll find a 2.0-litre four cylinder powerplant beneath the bonnet mated to a 9G-TRONIC 9-speed automatic gearbox and 4MATIC 4WD. Despite prevailing market trends, for the time being at least, most GLCs will continue to sold in diesel form - probably in base 194hp 220 d guise or possibly in uprated 266hp 300 d form. The single conventional GLC 300 petrol derivative has 254hp and if that's not fast enough, then you'll want to know that the same 48V 2.0-litre mild hybrid petrol engine makes a further appearance tuned up to 402hp in the Mercedes-AMG GLC 43 4MATIC+ model. The other versions in the range are all Plug-in Hybrids. The two mainstream PHEV variants take the 2.0-litre petrol and diesel engines we've just referenced and mate them to a 134hp electric motor, creating what look on paper to be quite prodigious levels of combined output - 308hp for the '300 e' petrol model we tried and 335hp for its unique-in-class '300 de' diesel stablemate. In each case, the electric motor is now powered by a much bigger 31.2kWh battery, which officially means you get up to 80 miles of driving range from an 11kW AC two and a half hour charge. The top Mercedes-AMG GLC 63 S variant is also a PHEV, but a very different kind of one, tuned more for performance than efficiency but with a 2.0-litre petrol powertrain developing 671hp.

Design and Build

You'd certainly recognise this as a GLC if you happen to be familiar with this model line. Looking at this MK2 version though, is a bit like encountering a friend who's been at a health farm for a couple of months and has emerged leaner and fitter. Rounded edges and clean surfacing bring some of the look of the C-Class to this Crossover, which as before is sold in SUV and Coupe forms. Either way, it's sleeker than before, the drag coefficient improved by two tenths to 0.29Cd. And it's 60mm longer, measuring in at 4,718mm. It's inside where existing GLC drivers will notice the biggest changes though. The dash adopts a large central portrait screen slightly canted towards the driver. The digital instrument display is borrowed from the C-Class too, but the GLC gets its own uniquely styled vents. And the seats are hugely improved, with more supportive cushioning materials. An augmented reality head-up display can be added as well. Out back, this MK2 model's 15mm wheelbase increase has been put to good use in the slightly more spacious rear section of the cabin - mainly to improve legroom, not one of the previous model's strong points. The bench slides back and forth too, which aids cargo flexibility. Ah yes, boot space. That's up by 50-litres to a class leading 600-litres for the base petrol and diesel SUV models (50-litres more than a conventional BMW X3) and for some reason you get a little more (620-litres) if you opt for the faster of the two conventional diesels, the GLC 300 d. There's a 55-litre reduction in those figures if you opt for the alternative GLC Coupe body shape. With either body style, if your preference is for a Plug-in Hybrid drivetrain, then predictably you'll have to lower your storage expectations by quite a lot - think just 400-litres with the PHEV SUV; it's 390-litres for a GLC Coupe in PHEV form.

Market and Model

Prices start from around £53,000 for the base GLC 220 d AMG Line, rising to just over £73,000 for the top mainstream variant, the plug-in hybrid GLC 300 e Premium Plus. There's an alternative GLC Coupe body style available too - at a premium of around £6,500. With both body shapes, expect the same 'AMG Line', 'AMG Line Premium' and 'AMG Line Premium Plus' trim levels. The top Mercedes-AMG GLC 63 S E Performance 4MATIC+ variant costs from £109,000. At least the standard equipment is generous, with things like smartphone integration, wireless charging and heated front seats standard across the range. Avoid base trim and your GLC will come with the brand's clever 'DIGITAL LIGHT' headlamps. These project in front of the car onto the road surface when driving at night, with things like guidance lines, symbols and animation, plus the system's intelligent technology highlights pedestrians that you might come across with a spotlight function. Better-specified versions also come with the brand's 'Parking Package' with its 360-degree camera. If your GLC has that, the cabin screen offers a 'transparent bonnet' view when you're driving off road, which shows a virtual view under the front of the vehicle, including the front wheels and the steering position. This allows the driver to recognise obstacles like sharp stones were deep potholes at an early stage. Quite a few owners will want to add on a tow bar - and will like the new 'Towing Route Planner' that's been added into the navigation system. Using this, routes can be planned in the central display that are suitable for driving with a trailer, taking into account things like passage width and passage heights. And there's an enhanced 'Trailer Manoeuvring Assistant' system that makes manoeuvring with a trailer easier, more comfortable and safer.

Cost of Ownership

Given the huge proportion of business sales accounted for by the GLC, Mercedes couldn't afford to return anything but a stellar set of efficiency figures with this MK2 model - and that's what we've got from the fully electrified engine range. Most customers will be choosing either the mild hybrid diesel GLC 220 d, which returns up to 52.3mpg on the combined cycle and up to 141g/km of CO2: it'd 51.4mpg and 152g/km in GLC 300 d form. The mild hybrid petrol GLC 300 returns up to 37.7mpg on the combined cycle and up to 171g/km. It's 2.0-litre mild hybrid petrol engine is shared by the Mercedes-AMG GLC 43 4MATIC model, the stats for which aren't too much different. If you want to do better, you'll need one of the Plug-in Hybrids. The petrol PHEV variant, the GLC 300 e, is rated at up to 565.0mpg on the combined cycle and 12g/km of CO2. The diesel Plug-in variant, the GLC 300 de, is rated at up to 706.3mpg on the combined cycle and 10g/km; yes, really. Both these mainstream PHEV variant's are BiK tax-rated at just 5%. In reality with a GLC PHEV, you can expect the kind of regular consumption figures you'd get from a decent diesel. The PHEVs have a bigger 31.2kWh battery this time round, which gives the petrol versions an EV driving range of between 74 and 81 miles; the diesel PHEV version has an even longer 81 mile range. There will also be a four-cylinder PHEV powertrain for the GLC 63 high performance AMG model - but with only a tiny sub-10 mile EV range. That top Mercedes-AMG GLC 63 S E Performance 4MATIC+ variant manages 37.5mpg and 170g/km. What else? Well across the range you get a comprehensive three year warranty that has no mileage restriction (rival BMW and Audi warranties restrict you to 60,000 miles). And this package is built upon by Mercedes' Mobilo scheme which delivers breakdown cover for up to thirty years, as long as you continue to have your car serviced at a Mercedes main dealer. And it's worth knowing that your maintenance outlay can be kept a little in check by going for the optional Service Care package that takes care of routine maintenance, spreading the cost of regular servicing.

Summary

Image is everything when it comes to premium mid-sized SUVs and on that basis, this second generation GLC is a very desirable package. In terms of styling, technology and efficiency, it borrows hugely from its C-Class cousin - to very good effect. Plus options like air suspension offer the kind of luxury that used to be limited to much larger luxury SUVs, enabling this car to cross ravines one minute and carve through a set of bends at speed the next. There's a combination here of performance, space and comfort that rivals will find very hard to beat and the now all-electrified engine range adds frugality to that list of attributes. Yes, some potential customers may feel that there are more dynamic choices they could make in this segment, but these people won't be able to leave a Mercedes showroom before being directed towards the sleeker Coupe version of this car - which could very well make them think again. Most though, will value the all-round practicality of the standard SUV model. Of course, this car's two closest arch-rivals, the BMW X3 and the Audi Q5, both have strong followings. And beyond those cars, there are trendier-looking options - a Jaguar F-PACE, a Volvo XC60 or an Alfa Romeo Stelvio for instance. Others may want the seven-seat capacity of a comparable Land Rover Discovery Sport. As an all-rounder though, combining many of the qualities you'll find in all of those cars, the GLC remains a tempting package. A segment benchmark? You'd have to say so.

Body Glass

Rear wiper

Heated rear window

Variable front intermittent wipers

Rain sensor windscreen wipers

Electric windows with one touch opening/closing and obstruction sensors

Heat and noise insulating acoustic glass

Heat insulating dark tinted glass

Brakes

Electronic parking brake

Hill start assist

Anti-lock braking system (ABS)

Electronic stability programme (ESP) with curve dynamic assist and cross wind assist

Carpets/Rugs

AMG floor mats

Chassis/Suspension

AMG Ride Control suspension

Communication

Bluetooth interface for hands free telephone

eCall emergency call system

Wireless charging system for mobile devices in the front

Driver Aids

Attention assist

Collision prevention assist plus

Rear axle steering

Active lane keeping assist

Acoustic presence indicator

AMG DYNAMIC SELECT with a choice of driving modes (Slippery, Comfort, Sport, Sport+, Individual)

Dashcam - front camera for video recording

Sports direct steer system with speed sensitive steering

Remote services plus

Driver Convenience

Remote boot release

Tailgate

Fluorescent jacket for driver

Driver Information

Multi function trip computer

Head up Display

Outside temperature display

Service indicator (Active Service System)

Mercedes connect me with remote online services

Smartphone integration

AMG track pace

Status display for rear seat belts in instrument cluster

Traffic sign assist

MBUX Interior assistant

MBUX augmented reality for navigation

MBUX voice control activated by keywords "Hey Mercedes"

MBUX navigation premium

Fingerprint scanner

11.9" high resolution multimedia colour display

Pre-installation for digital key transfer

Instrument display in miles with English lettering

12.3" Digital individually configurable instrument display

Driving Mirrors

Automatic dimming rear view mirror

Electrically adjustable and heated door mirrors

Embellishment Trims

AMG Carbon fibre with centre console in high gloss black

Engine

62 litre fuel tank

Petrol Particulate Filter (PPF)

Entertainment

DAB digital radio tuner

Burmester 3D surround sound system

Sound personalisation

MBUX extended functions

Exterior Body Features

Black roof rails

Electric panoramic glass sunroof

AMG spoiler lip

Rear side wing doors

AMG Real Performance Sound

Transparent Bonnet

Mercedes AMG exterior

AMG fuel cap

AMG exhaust system with sporty engine sound

Wheel arch liners in the vehicle colour

Exterior Lights

High level LED brake light

Headlight washers

Adaptive brake lights

Range adjustable headlights

LED indicator lights

Welcome and follow-me home light functionality

LED tail lamp

Auto headlights

Integrated LED daytime running lights

LED rear fog lights

Digital light LED headlights with projection function

Heating/Cooling/Ventilation

THERMATIC automatic climate control

Interior Features

Load compartment cover

Heated steering wheel

Gearshift paddles on steering wheel

Sports pedals with stainless steel surfaces and rubber studs

Front centre armrest with stowage compartment

Double cup holder in centre console

Electrically height/reach adjustable steering column

Audio and onboard settings control on multifunction steering wheel

AMG Leather upholstery

Illuminated glove compartment

Partition net

Mercedes AMG interior

Artico leather dashboard with contrast stitching

Illuminated door sill panels with AMG lettering and with exchangable cover

AMG performance steering wheel in carbon fibre design / MICROCUT microfibre with AMG steering wheel buttons

Interior Lights

Ambient lighting premium with projection of brand logo

Packs

Memory pack - GLC

Boot comfort package - GLC

Stowage space package - GLC

Parking package with 360 degree camera - GLC

Interior lighting pack - GLC AMG

AMG Exterior Night pack 2 - GLC AMG 63 Se

Mirror pack - GLC AMG

Keyless-Go comfort package - GLC

AMG Driver's package - GLC AMG

USB Plus Pack - GLC

AMG performance high end seat pack - GLC

AMG Exterior Night pack - GLC Coupe AMG 63 Se

Exterior carbon-fibre package 1 - GLC AMG Edition Midnight

AMG dynamic plus pack - GLC Coupe

Easy tailgate pack - GLC

Safety

Front seatbelt pretensioners

Front passenger seat occupancy sensor

Child proof door locks

Warning triangle and first aid kit

Tyre pressure monitoring system

3 rear 3 point seatbelts

Active bonnet

Front and rear seatbelt reminder

Automatic front passenger airbag deactivation

Dual-stage airbags - driver and front passenger, driver knee bag and window bags for driver, front passenger and rear passengers

Electronic key chrome surround

Seats

Rear head restraints

Front head restraints

Rear top tether child seat ISOFIX attachment

40:20:40 split folding rear seats

3 seat bench in 2nd row

Automatic child seat recognition sensor

Single front passenger seat

Security

Immobiliser

Central locking with interior switch, automatic locking and crash sensor with emergency opening function

Increased anti-theft protection

Anti theft alarm system with preinstallation for collision detection

Guard 360 degree vehicle protection plus

Transmission

4MATIC permanent four wheel drive

9G TRONIC plus automatic transmission

Vanity Mirrors

Sun visors with illuminated vanity mirrors

Wheels - Alloy

21" AMG Y spoke light alloy wheels painted in matt black with high sheen rim flange

Wheels - Spare

TIREFIT with tyre inflation compressor

Emissions - ICE

Standard Euro Emissions: EURO 6

Noise Level dB(A): 71

CO: 0.071

HC: 0.008

NOx: 0.014

HC+NOx: N

Particles: 0.0001

WLTP - CO2 (g/km) - Comb: 236

WLTP - CO2 (g/km) - Comb - TEH: 237

WLTP - CO2 (g/km) - Comb - TEL: 236

Engine and Drive Train

Cylinders - Bore (mm): 83

Cylinders - Stroke (mm): 92

CC: 1991

Cylinders: 4

Cylinder Layout: IN-LINE

Number of Valves: 16

Camshaft: DOHC

Fuel Delivery: TURBO INJECTION

Catalytic Convertor: No

Engine Layout: NORTH SOUTH

Compression Ratio: 10.0:1

Transmission: SEMI-AUTO

Gears: 9 SPEED

Fuel Consumption - ICE

EC Directive 1999/100/EC Applies: 0

WLTP - MPG - Low: 18.6

WLTP - MPG - Medium: 26.7

WLTP - MPG - High: 32.1

WLTP - MPG - Extra High: 29.1

WLTP - MPG - Comb: 27.2

WLTP - MPG - Low - TEL: 18.6

WLTP - MPG - Low - TEH: 18.5

WLTP - MPG - Medium - TEL: 26.7

WLTP - MPG - Medium - TEH: 26.4

WLTP - MPG - High - TEL: 32.1

WLTP - MPG - High - TEH: 31.7

WLTP - MPG - Extra High - TEL: 29.1

WLTP - MPG - Extra High - TEH: 28.8

WLTP - MPG - Comb - TEL: 27.2

WLTP - MPG - Comb - TEH: 27.2

WLTP - FC (l/100km) - Low: 15.2

WLTP - FC (l/100km) - Medium: 10.6

WLTP - FC (l/100km) - High: 8.8

WLTP - FC (l/100km) - Extra High: 9.7

WLTP - FC (l/100km) - Comb: 10.4

WLTP - FC (l/100km) - Low - TEL: 15.2

WLTP - FC (l/100km) - Low - TEH: 15.3

WLTP - FC (l/100km) - Medium - TEL: 10.6

WLTP - FC (l/100km) - Medium - TEH: 10.7

WLTP - FC (l/100km) - High - TEL: 8.8

WLTP - FC (l/100km) - High - TEH: 8.9

WLTP - FC (l/100km) - Extra High - TEL: 9.7

WLTP - FC (l/100km) - Extra High - TEH: 9.8

WLTP - FC (l/100km) - Comb - TEL: 10.4

WLTP - FC (l/100km) - Comb - TEH: 10.4

General

Coin Series: AMG Premium Plus

Coin Description: 4Matic+

Standard manufacturers warranty - Years: 3

Standard manufacturers warranty - Mileage: 999999

Manufacturers Paintwork Guarantee - Years: 3

Manufacturers Corrosion Perforation Guarantee - Years: 30

Did at least one aspect of this vehicle's safety give cause for concern?: 0

Special Edition: 0

Special Order: 0

Based On ID: N

Insurance Group 1 - 50 Effective January 07: 46E

NCAP Adult Occupant Protection %: 92

NCAP Child Occupant Protection %: 90

NCAP Pedestrian Protection %: 74

NCAP Safety Assist %: 84

NCAP Overall Rating - Effective February 09: 5

Badge Power: 421

Badge Engine CC: 2.0

Vehicle Homologation Class: M1

Generation Mark: 2

Alternative Fuel Qualifying: No

Performance

0 to 62 mph (secs): 4.5

Top Speed: 155

Engine Power - BHP: 421

Engine Power - PS: No

0 to 60 mph (secs): 0

Engine Power - KW: 310

Engine Power - RPM: 6750

Engine Torque - LBS.FT: 369

Engine Torque - NM: 500

Engine Torque - RPM: 5000

Engine Torque - MKG: 51

Test Cycles

Emissions Test Cycle: WLTP

RDE Certification Level: RDE 2

Tyres

Tyre Size Front: 265/40 R21

Tyre Size Rear: 295/35 R21

Tyre Size Spare: TYRE REPAIR KIT

Wheel Type: 21" ALLOY

Wheel Style: AMG Y SPOKE

Alloys?: No

Space Saver?: 0

Vehicle Dimensions

Length: 4749

Width: 1920

Wheelbase: 2888

Width (including mirrors): 2076

Height: N

Height (including roof rails): 1635

Weight and Capacities

Minimum Kerbweight: 2110

Gross Vehicle Weight: 2550

Fuel Tank Capacity (Litres): 62

Max. Towing Weight - Braked: 1800

Max. Towing Weight - Unbraked: 750

Max. Loading Weight: 440

Luggage Capacity (Seats Up): 620

No. of Seats: 5

Max. Roof Load: 75

Luggage Capacity (Seats Down): 1680

Turning Circle - Kerb to Kerb: 12.4

Exterior Body Features

Metallic paint

Packs

Driving assistance package plus - GLC

Paint - Metallic

Metallic - Graphite grey

Metallic - Obsidian black

Paint - Special

Manufaktur magno - Graphite grey

Safety

Red seat belts

Towing

Trailer coupling with ESP trailer stabilisation

Trim - Leather

AMG Leather - Black with red contrast stitching