Compare performance (367 HP vs 680 HP), boot space and price (49,700 £ vs 50,300 £ ) at a glance. Find out which car is the better choice for you – Audi A6 Avant or Mercedes GLC?
All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.
The automotive world is buzzing with two of the most discussed luxury vehicles: the Audi A6 Avant and the Mercedes-Benz GLC. Both come with their own set of perks and cutting-edge innovations, but which one better meets your need for dynamic driving pleasure and practicality? Let's explore the details.
The Audi A6 Avant retains its reputation as a stylish and functional wagon. With a length ranging between 4939mm and 4995mm and a graceful width up to 1951mm, it showcases sleek lines that speak volumes of its luxury branding. This wagon stands elegantly lower with heights between 1450mm to 1469mm.
On the other hand, the Mercedes GLC assumes the robust stance of an SUV. Its length varies from 4716mm to 4792mm, combined with a consistent width of 1890mm. With a height reaching up to 1647mm, the GLC asserts its dominance on the road, offering a familiar SUV look.
The A6 Avant comes with an impressive variety of engines, including diesel, petrol mild hybrid (MHEV), and plug-in hybrid options, with power output stretching from a modest 163 HP to a staggering 630 HP for the sportier variants. Supported with dual-clutch automatic or regular automatic transmissions, it offers both front-wheel and all-wheel drive, further enhancing its versatility.
Mercedes-Benz GLC, however, doesn't shy away from offering power. With petrol, diesel MHEV, and plug-in hybrid engines, its power range rings between 186 HP and 680 HP. In particular, the plug-in hybrids promise an impressive electric range, reaching up to 130 km on a full charge.
Fuel efficiency remains a focal point for both cars. Audi's most economical A6 Avant model consumes as low as 1.4L/100km thanks to its hybrid technology, but mostly ranges between 5.4 to 12.3L/100km based on engine choice.
Mercedes GLC comes close with its commendable fuel consumption range of 0.4 to 10.3L/100km, with the plug-in hybrid models shining with that astonishingly low figure.
When it comes to space, both cars offer distinct advantages. The A6 Avant is known for its trunk capacity, offering between 405 to 565 liters, ensuring that long trips are never tripped up by packing constraints.
However, with 620 liters of trunk space, the GLC unambiguously takes the lead. Both cars comfortably seat five occupants, offering a comfortable travel experience regardless of the destination.
Deciding between the Audi A6 Avant and the Mercedes-Benz GLC is a matter of choosing between the elegance and driving dynamics of a wagon and the versatility and elevated presence of an SUV. The A6 Avant would cater to those looking for a traditional, performance-oriented luxury car, while the GLC is designed for those desiring an opulent SUV with exceptional power and hybrid technology.
Each model brings its unique strengths to the table, ultimately leaving the choice in the hands of individual preferences where design, power, efficiency, and space are balanced according to personal needs.
Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.
Audi A6 Avant is only slightly cheaper – starting at 49,700 £ , while the Mercedes GLC costs 50,300 £ . That’s a price difference of around 613 £.
Fuel consumption also shows a difference: the Mercedes GLC uses 1.6 L/100km and is clearly more efficient than the Audi A6 Avant with 2.3 L/100km. The difference is about 0.7 L/100km.
As for electric range, the Mercedes GLC offers considerably more range – reaching up to 714 km, about 613 km more than the Audi A6 Avant.
Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.
When it comes to engine power, the Mercedes GLC offers significantly more power – delivering 680 HP compared to 367 HP. That’s roughly 313 HP more horsepower.
When accelerating from 0 to 100 km/h, the Mercedes GLC is visibly quicker – completing the sprint in 3.5 s, while the Audi A6 Avant takes 4.7 s. That’s about 1.2 s quicker.
There’s also a difference in torque: the Mercedes GLC delivers clearly more torque with 1,020 Nm compared to 580 Nm. That’s about 440 Nm more.
Whether family car or daily driver – which one offers more room, flexibility and comfort?
Both vehicles offer seating for 5 people.
In terms of curb weight, Audi A6 Avant is very slightly lighter – 1,865 kg compared to 1,985 kg. The difference is around 120 kg.
Looking at boot space, the Mercedes GLC offers slightly more boot space – 620 L compared to 503 L. That’s a difference of about 117 L.
When it comes to payload, the Mercedes GLC carries marginally more – 575 kg compared to 570 kg. That’s a difference of about 5 kg.
The Mercedes GLC is decisively ahead in the objective data comparison.
This result only shows which model scores more points on paper – not which of the two cars feels right for you.
The Audi A6 Avant wraps executive poise and usable practicality into an impeccably finished estate that makes everyday driving feel noticeably more grown-up. It serves up a calm, composed ride and clever packaging for buyers who want space and refinement without ostentation — the sensible choice that still manages to impress.
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The Mercedes GLC blends plush cabin comfort and composed road manners into an SUV that feels more grown-up than it looks. It won’t shout for attention, but will quietly please buyers who want refinement, usable space and a touch of luxury without the drama.
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Costs and Consumption |
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Price
49,700 - 70,200 £
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Price
50,300 - 111,000 £
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Consumption L/100km
2.3 - 7.5 L/100km
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Consumption L/100km
1.6 - 9.7 L/100km
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Consumption kWh/100km
-
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Consumption kWh/100km
14.9 - 16.6 kWh/100km
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Electric Range
94 - 101 km
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Electric Range
12 - 714 km
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Battery Capacity
-
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Battery Capacity
94 kWh
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co2
53 - 170 g/km
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co2
0 - 221 g/km
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Fuel tank capacity
-
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Fuel tank capacity
-
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Dimensions and Body |
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|---|---|
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Body Type
Estate
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Body Type
SUV
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Seats
5
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Seats
5
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Doors
-
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Doors
5
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Curb weight
1,865 - 2,240 kg
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Curb weight
1,985 - 2,535 kg
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Trunk capacity
404 - 503 L
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Trunk capacity
390 - 620 L
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Length
-
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Length
4,845 mm
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Width
1,875 mm
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Width
1,890 - 1,913 mm
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Height
-
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Height
1,644 mm
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Max trunk capacity
-
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Max trunk capacity
1,740 L
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Payload
535 - 570 kg
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Payload
475 - 575 kg
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Engine and Performance |
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|---|---|
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Engine Type
Petrol, Petrol MHEV, Diesel MHEV, Plugin Hybrid
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Engine Type
Diesel MHEV, Plugin Hybrid, Electric
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Transmission
Automatic
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Transmission
Automatic
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Transmission Detail
Dual-Clutch Automatic
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Transmission Detail
Automatic Gearbox, Reduction Gearbox
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Drive Type
Front-Wheel Drive, All-Wheel Drive
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Drive Type
All-Wheel Drive
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Power HP
204 - 367 HP
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Power HP
186 - 680 HP
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Acceleration 0-100km/h
4.7 - 8.3 s
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Acceleration 0-100km/h
3.5 - 9 s
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Max Speed
-
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Max Speed
210 km/h
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Torque
340 - 580 Nm
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Torque
380 - 1,020 Nm
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Number of Cylinders
4 - 6
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Number of Cylinders
4 - 6
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Power kW
150 - 270 kW
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Power kW
137 - 500 kW
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Engine capacity
1,968 - 2,995 cm3
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Engine capacity
1,991 - 2,989 cm3
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General |
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|---|---|
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Model Year
2025
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Model Year
2,025 - 2,026
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CO2 Efficiency Class
F, D, E, B
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CO2 Efficiency Class
D, B, E, F, G, A
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Brand
Audi
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Brand
Mercedes-Benz
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Deutschland
France
Nederland
Great Britain
Sverige
Danmark
Suomi
Italia
Polska
España