Find a dealer
The AA
The AA
  • Used Cars
    Back Used Cars
    • Browse by Manufacturer
      Back Browse by Manufacturer
      • Audi
      • BMW
      • Citroen
      • Ford
      • Hyundai
      • Jaguar
      • Kia
      • Land Rover
      • Mercedes
      • MINI
      • Nissan
      • Peugeot
      • Porsche
      • Renault
      • Skoda
      • Toyota
      • Vauxhall
      • Volkswagen
      • Volvo
      • Browse by manufacturer
      • Search all used cars
    • Browse by Model
      Back Browse by Model
      • Audi A1
      • Audi A3
      • Audi Q5
      • BMW 3 Series
      • Fiat 500
      • Ford Fiesta
      • Ford Focus
      • Ford Kuga
      • Kia Sportage
      • Mercedes A Class
      • Mercedes C Class
      • MINI Hatch
      • Nissan Juke
      • Nissan Qashqai
      • Peugeot 208
      • Range Rover Evoque
      • Toyota Yaris
      • Vauxhall Astra
      • Vauxhall Corsa
      • Vauxhall Mokka
      • Volkswagen Golf
      • Volkswagen Polo
      • Volkswagen Tiguan
      • Search all used cars
    • Browse by Location
      Back Browse by Location
      • Birmingham
      • Bristol
      • Cardiff
      • Doncaster
      • Edinburgh
      • Glasgow
      • Hull
      • Leeds
      • Leicester
      • Liverpool
      • London
      • Manchester
      • Newcastle
      • Norwich
      • Nottingham
      • Portsmouth
      • Reading
      • Sheffield
      • Southampton
      • Swindon
      • All locations
    • Browse by Body style
      Back Browse by Body style
      • SUVs
      • 7 Seaters
      • Sports cars
      • 4x4
      • Estates
      • Hatchbacks
      • Motorhomes
      • Family cars
      • Convertibles
      • Coupes
      • Saloons
      • Luxury cars
      • People carriers
      • City cars
      • Superminis
      • Supercars
      • Executive cars
      • All bodystyles
    • Browse by Fuel type
      Back Browse by Fuel type
      • Used diesel cars
      • Used electric cars
      • Used hybrid cars
      • Used petrol cars
      • Used plug-in hybrid cars
    • Browse by Transmission
      Back Browse by Transmission
      • Used automatic cars
      • Used manual cars
    • Browse by Maximum price
      Back Browse by Maximum price
      • Used cars under £30,000
      • Used cars under £20,000
      • Used cars under £15,000
      • Used cars under £10,000
      • Used cars under £5,000
      • Used cars under £4,000
      • Used cars under £3,000
      • Used cars under £2,000
      • Used cars under £1,000
    • Browse by Engine size
      Back Browse by Engine size
      • 1.0 litre used cars
      • 1.2 litre used cars
      • 2.0 litre used cars
      • 3.0 litre used cars
      • 4.0 litre used cars
      • 5.0 litre used cars
    • Buying advice
      Back Buying advice
      • Best used 4x4 cars
      • Best used 7-seater cars
      • Best used electric cars
      • Best used estate cars
      • Best used family cars
      • Best used first cars
      • Best used fuel efficient cars
      • Best used hybrid cars
      • Best used second-hand cars
      • Best used small cars
      • Best used sports cars
      • Best used SUV cars
    • Car checks and delivery
      Back Car checks and delivery
      • Used vehicle inspection
      • Car history check
      • Vehicle delivery
  • Used Vans
    Back Used Vans
    • Browse by Manufacturer
      Back Browse by Manufacturer
      • Citroen
      • Fiat
      • Ford
      • Isuzu
      • Iveco
      • Mercedes
      • Mitsubishi
      • Nissan
      • Peugeot
      • Renault
      • Toyota
      • Vauxhall
      • Volkswagen
      • Search all used vans
    • Browse by Model
      Back Browse by Model
      • Citroen Dispatch
      • Citroen Relay
      • Ford Ranger
      • Ford Transit
      • Ford Transit Connect
      • Mercedes Sprinter
      • Mercedes Vito
      • Mitsubishi l200
      • Nissan Navara
      • Peugeot Boxer
      • Peugeot Expert
      • Peugeot Partner
      • Renault Kangoo
      • Renault Trafic
      • Toyota Hi Lux
      • Vauxhall Combo
      • Vauxhall Movano
      • Vauxhall Vivaro
      • Volkswagen Caddy
      • Volkswagen Crafter
      • Volkswagen Transporter
      • Search all used vans
    • Van checks and delivery
      Back Van checks and delivery
      • Used vehicle inspection
      • Van history check
      • Vehicle delivery
  • Finance
    Back Finance
    • Car finance
    • Car finance calculator
    • Eligibility checker
    • Car finance explained
    • PCP car finance
    • HP car finance
    • Car loans
  • Leasing
    Back Leasing
    • Car leasing
      Back Car leasing
      • All car leasing
        • Search by make
        • Fiat
        • Hyundai
        • Nissan
        • Skoda
        • Vauxhall
        • Volkswagen
        • Search by type
        • Electric
        • Hybrid
        • Automatic
        • SUV
        • Hatchback
        • Estate
        • Search by price
        • Under £300
        • £300 - £400
        • £400 - £500
        • Above £500
    • Van leasing
      Back Van leasing
      • All van leasing
        • Search by make
        • Ford
        • Mercedes
        • Nissan
        • Peugeot
        • Renault
        • Volkswagen
        • Search by type
        • Luton vans
        • Crew vans
        • Pick-up vans
        • Tipper vans
        • Dropside vans
        • High-roof vans
        • Search by price
        • Under £300
        • £300 - £400
        • £400 - £500
        • Above £500
    • Business leasing
      Back Business leasing
      • All business leasing
    • Help and guides
      Back Help and guides
        • Leasing guides
        • How AA Lease works
        • What is a car lease
        • Pros and cons of leasing
        • Common lease misbeliefs
        • Returning your lease vehicle
        • View all leasing guides
        • Help
        • FAQs
        • Contact us
  • Sell
    Back Sell
    • Sell my car
    • Sell my van
    • Value my car
  • Aftercare
    Back Aftercare
    • Car warranty
    • Breakdown cover
    • Car insurance
    • Car servicing
    • MOT
    • Car smart care
  • Advice
    Back Advice
    • Buying a used car online
    • Car reviews
    • Buyers guides
    • Best cars
    • Driving advice
  • Your account
  • Find a dealer
Image of a Mercedes GLS car

Used Mercedes GLS for sale

Looking for a car that combines plenty of space with luxury features? The Mercedes GLS provides both, with its generous seating for seven and a refined interior.

Used Mercedes GLS cars in stock

  • Mercedes GLS 3.0 GLS 350d Designo Line 4Matic Auto 4WD 5dr
    £35,000
    MERCEDES-BENZ GLS 3.0 GLS 350d Designo Line 4Matic Auto 4WD 5dr
    • 2017
    • •
    • 65,757 miles
    • •
    • Diesel
    • •
    • Automatic
    RYDS Group Ltd
    Icon - phone receiver 020 3018 3143

    Icon - location pin London

  • Mercedes GLS 4.0 GLS600h V8 MHEV G-Tronic 4MATIC Euro 6 (s/s) 5dr
    £134,990
    Mercedes-Benz Maybach GLS 4.0 GLS600h V8 MHEV G-Tronic 4MATIC Euro 6 (s/s) 5dr
    • 2023
    • •
    • 9,036 miles
    • •
    • Petrol Hybrid
    • •
    • Automatic
    Lennox Auto Ltd
    Icon - phone receiver 020 3018 3492

    Icon - location pin London

  • Mercedes GLS 3.0 GLS350d V6 designo Line G-Tronic 4MATIC Euro 6 (s/s) 5dr
    £28,990
    Mercedes-Benz C Class 3.0 GLS350d V6 designo Line G-Tronic 4MATIC Euro 6 (s/s) 5dr
    • 2017
    • •
    • 94,233 miles
    • •
    • Diesel
    • •
    • Automatic
    Auto Mall Ltd
    Icon - phone receiver 01582 232 497

    Icon - location pin London

  • Mercedes GLS 3.0 GLS350d V6 designo Line G-Tronic 4MATIC Euro 6 (s/s) 5dr
    £32,790
    Mercedes-Benz C Class 3.0 GLS350d V6 designo Line G-Tronic 4MATIC Euro 6 (s/s) 5dr
    • 2016
    • •
    • 69,500 miles
    • •
    • Diesel
    • •
    • Automatic
    Hanar Cars UK Ltd
    Icon - phone receiver 020 3018 2883

    Icon - location pin London

  • Mercedes GLS 5.5 GLS63 V8 AMG SpdS+7GT 4MATIC Euro 6 (s/s) 5dr
    £39,790
    Mercedes-Benz C Class 5.5 GLS63 V8 AMG SpdS+7GT 4MATIC Euro 6 (s/s) 5dr
    • 2017
    • •
    • 53,500 miles
    • •
    • Petrol
    • •
    • Automatic
    Hanar Cars UK Ltd
    Icon - phone receiver 020 3018 2883

    Icon - location pin London

  • Mercedes GLS 3.0 GLS350d V6 AMG Line G-Tronic 4MATIC Euro 6 (s/s) 5dr
    £28,000
    Mercedes-Benz GLS 3.0 GLS350d V6 AMG Line G-Tronic 4MATIC Euro 6 (s/s) 5dr
    • 2018
    • •
    • 80,000 miles
    • •
    • Diesel
    • •
    • Automatic
    UMC (Uxbridge Motoring Centre)
    Icon - phone receiver 020 3018 3479

    Icon - location pin Uxbridge

View 45 vehicles

Mercedes GLS cars from Manufacturer Approved Dealers

Vehicles inspected by the dealer to ensure they meet the manufacturer's standards
  • Mercedes GLS GLS 400d 4Matic Night Ed Exec 5dr 9G-Tron
    £70,299
    Mercedes-Benz GLS GLS 400d 4Matic Night Ed Exec 5dr 9G-Tron
    • 2023
    • •
    • 22,714 miles
    • •
    • Diesel
    • •
    • Semiauto
    Marshall Jaguar of Cambridge
    Icon - phone receiver 01223 964 745

    Icon - location pin Cambridge

  • Mercedes GLS GLS 400d 4Matic Night Ed Exec 5dr 9G-Tron
    £58,980
    Mercedes-Benz GLS GLS 400d 4Matic Night Ed Exec 5dr 9G-Tron
    • 2022
    • •
    • 44,867 miles
    • •
    • Diesel
    • •
    • Semiauto
    Marshall Mercedes-Benz of Southampton
    Icon - phone receiver 02381 173 286

    Icon - location pin Southampton

  • Mercedes GLS GLS 450d 4Matic Business Class 5dr 9G-Tronic
    £88,480
    Mercedes-Benz GLS GLS 450d 4Matic Business Class 5dr 9G-Tronic
    • 2025
    • •
    • 6,460 miles
    • •
    • Diesel
    • •
    • Semiauto
    Marshall Mercedes-Benz of Southampton
    Icon - phone receiver 02381 173 286

    Icon - location pin Southampton

  • Mercedes GLS GLS 450d 4Matic Business Class 5dr 9G-Tronic
    £88,680
    Mercedes-Benz GLS GLS 450d 4Matic Business Class 5dr 9G-Tronic
    • 2025
    • •
    • 8,881 miles
    • •
    • Diesel
    • •
    • Semiauto
    Marshall Mercedes-Benz of Southampton
    Icon - phone receiver 02381 173 286

    Icon - location pin Southampton

  • Mercedes GLS 2.9 GLS400d Night Edition SUV 5dr Diesel G-Tronic 4MATIC Euro 6
    £59,500
    MERCEDES-BENZ GLS 2.9 GLS400d Night Edition SUV 5dr Diesel G-Tronic 4MATIC Euro 6
    • 2022
    • •
    • 34,993 miles
    • •
    • Diesel
    • •
    • Automatic
    Cartime Bury
    Icon - phone receiver 0161 623 2764

    Icon - location pin Bury

  • Mercedes GLS GLS 450d 4Matic AMG Line Premium + 5dr 9G-Tronic
    £77,780
    Mercedes-Benz GLS GLS 450d 4Matic AMG Line Premium + 5dr 9G-Tronic
    • 2024
    • •
    • 11,329 miles
    • •
    • Diesel
    • •
    • Semiauto
    Marshall Mercedes-Benz of Bolton
    Icon - phone receiver 01204 219 524

    Icon - location pin Bolton

View 7 approved >

Hybrid used Mercedes GLS cars in stock

  • Mercedes-Benz Maybach GLS 4.0 GLS600h V8 MHEV G-Tronic 4MATIC Euro 6 (s/s) 5dr
    Mercedes-Benz Maybach GLS 4.0 GLS600h V8 MHEV G-Tronic 4MATIC Euro 6 (s/s) 5dr
    Mercedes-Benz Maybach GLS 4.0 GLS600h V8 MHEV G-Tronic 4MATIC Euro 6 (s/s) 5dr
    £134,990
    Mercedes-Benz Maybach GLS 4.0 GLS600h V8 MHEV G-Tronic 4MATIC Euro 6 (s/s) 5dr
    • 2023
    • •
    • 9,036 miles
    • •
    • Petrol Hybrid
    • •
    • Automatic
    Lennox Auto Ltd
    Icon - phone receiver 020 3018 3492

    Icon - location pin London

  • MERCEDES-BENZ GLS 3.0 GLS450dh MHEV AMG Line (Premium Plus) SUV 5dr Diesel Hybrid
    MERCEDES-BENZ GLS 3.0 GLS450dh MHEV AMG Line (Premium Plus) SUV 5dr Diesel Hybrid
    MERCEDES-BENZ GLS 3.0 GLS450dh MHEV AMG Line (Premium Plus) SUV 5dr Diesel Hybrid
    £78,990
    MERCEDES-BENZ GLS 3.0 GLS450dh MHEV AMG Line (Premium Plus) SUV 5dr Diesel Hybrid
    • 2024
    • •
    • 6,000 miles
    • •
    • Hybrid
    • •
    • Automatic
    SM Specialist Cars Ltd
    Icon - phone receiver 01234 532 382

    Icon - location pin Bedford

  • Mercedes-Benz GLS GLS 450d 4Matic Business Class 5dr 9G-Tronic
    Mercedes-Benz GLS GLS 450d 4Matic Business Class 5dr 9G-Tronic
    Mercedes-Benz GLS GLS 450d 4Matic Business Class 5dr 9G-Tronic
    £86,990
    Mercedes-Benz GLS GLS 450d 4Matic Business Class 5dr 9G-Tronic
    • 2024
    • •
    • 9,181 miles
    • •
    • Hybrid
    • •
    • Semiauto
    Group 1 Mercedes-Benz of Nottingham
    Icon - phone receiver 0115 886 2641

    Icon - location pin Nottingham

View 4 available >

Used Mercedes GLS

Well known for blending power and practicality, the GLS offers robust engines alongside high-end comfort and technology. Positioned as the flagship SUV in the Mercedes line-up, it is built for big families and even bigger adventures, praised for its commanding presence, adaptable seating, upmarket technology, and impressive space for people and luggage. Introduced in 2016 as the successor to the GL-Class, the GLS received a significant update in 2020, making earlier models great value for those wanting luxury without the latest price tag. Competition includes the BMW X7 and Range Rover, but the GLS holds its own with advanced driver aids, powerful diesel and petrol engines, and a vast interior designed for daily life and long trips.

Pros

  • +A roomy people-mover
  • +Dependable build quality
  • +Generous standard equipment

Cons

  • -High running costs
  • -Large size makes parking tricky
  • -Thirsty for a diesel
  • What are the key safety features of the Mercedes GLS?

    The Mercedes GLS comes with a full suite of safety kit as standard: multiple airbags, electronic stability control, automatic emergency braking and a 360-degree camera. Some contain technology that stops this high-sided SUV from being affected by crosswinds on the motorway. Modern driver aids include active blind spot assist and an exit-warning function.

  • What engine options are available with the Mercedes GLS?

    Earlier GLS models are often powered by a 3.0-litre V6 diesel, while the latest generation offers a 3.0-litre petrol engine with mild-hybrid technology. Range-topping AMG versions use a 4.0-litre V8 petrol. All engines are paired with a smooth automatic gearbox.

  • What are the standard technology and infotainment features in the Mercedes GLS?

    As a luxury SUV with a cockpit-like cabin, you can expect to find dual 12.3-inch screens, satnav, DAB radio, Bluetooth, Apple CarPlay and Android Auto in the GLS. Premium touches like ambient lighting, multi-zone climate control and electrically-adjustable seats are common. Some versions include Harman Kardon sound systems and heads-up displays.

  • What is the fuel consumption of the Mercedes GLS?

    Fuel consumption varies by engine and year. Most diesels get between 27 and 37mpg, while petrol engines average 20 to 27mpg. More powerful AMG and Maybach versions are thirstier (20mpg at best on a good day). It’s not the most efficient SUV, but that's expected for its size and power.

  • What should I check when buying a used Mercedes GLS?

    Inspect the bodywork and alloy wheels for scuffs from use – this is a supersized vehicle that's challenging to park. Check all electrical equipment works; pay special attention to the air suspension for leaks or warning lights. Examine the interior for wear and ensure service history is complete. A professional look by The AA Vehicle Inspection can offer extra reassurance.

  • Are Mercedes GLS cars reliable?

    The GLS is a complex, luxury SUV – more features could mean more potential issues. Mercedes' reliability has improved, yet surveys still place it mid-table among premium brands. Repair costs can be high, but many owners report solid mechanical dependability if time and care are taken over maintenance.

  • Used Mercedes cars by model
    • Mercedes A Class
    • Mercedes AMG GT
    • Mercedes B Class
    • Mercedes C Class
    • Mercedes Citan
    • Mercedes CL
    • Mercedes CLA
    • Mercedes CLC
    • Mercedes CLK
    • Mercedes CLS
    • Mercedes E Class
    • Mercedes EQA
    • Mercedes EQB
    • Mercedes EQC
    • Mercedes EQV
    • Mercedes G Class
    • Mercedes GL Class
    • Mercedes GLA
    • Mercedes GLB
    • Mercedes GLC
    • Mercedes GLE
    • Mercedes M Class
    • Mercedes R Class
    • Mercedes S Class
    • Mercedes SL
    • Mercedes SLC
    • Mercedes SLK
    • Mercedes SLS
    • Mercedes Sprinter
    • Mercedes V Class
    • Mercedes Vaneo
    • Mercedes Viano
    • Mercedes Vito
    • Mercedes X Class
    • Used Mercedes
    • Other SUVs
    • Mercedes Dealers

Connect with us

Facebook X YouTube LinkedIn
  1. Used Cars >
  2. Mercedes >
  3. GLS
For customers
  • Customer terms & conditions
  • Our dealers
  • Motoring advice
  • Car delivery
  • Why AA Cars
  • Customer data request form
For dealers
  • Car dealer terms & conditions
  • AA Cars Standards code (trade)
  • Advertise with us
Other
  • Contact us
  • About us
  • Privacy notice
  • Cookie policy
  • Sitemap
Vehicle Inspections

The AA recommends an AA Cars Vehicle Inspection before purchase. Not all cars are mechanically checked by the AA.

  • Vehicle Inspection
  • theAA.com
© AA Cars 2025  | Company No. 4546950  |  VAT No. 188 0311 10