(estate) Mercedes 300 used • 81 cars for sale

Market overview: Prices range from £38,600 to £63,694 across all listings

Featured deals

Carwow

Used 2025 Mercedes 300 AMG Line Premium Plus Estate | £42,833 (Super price)

Mercedes 300 - GLC 4Matic AMG Line Premium Plus 5dr 9G-Tronic

Super price

You save £6,867

HP91QJ, Buckinghamshire

167 g CO2/km comb. - 258 HP (189 kW) - 7.3 Mpg

Carwow

Used 2024 Mercedes 300 AMG line Estate | £50,495 (Fair price)

Mercedes 300 - GLC4Matic AMG Line Prem [Pan] 5dr 9G-Tronic

Fair price

BS107UB, Gloucestershire

168 g CO2/km comb. - 258 HP (189 kW) - 7.3 Mpg

Carwow

Used 2025 Mercedes 300 AMG Line Premium Plus Estate | £47,599 (Super price)

Mercedes 300 - GLC4Matic AMG Line Premium Plus 5dr 9G-Tronic

Super price

You save £7,001

NN156XY Derby, Northamptonshire

167 g CO2/km comb. - 258 HP (189 kW) - 7.3 Mpg

Carwow

Used 2024 Mercedes 300 AMG line Estate | £51,905 (Fair price)

Mercedes 300 - GLC4Matic AMG Line Prem [Pan] 5dr 9G-Tronic

Fair price

Estimated price £50,854

ST15JP, Staffordshire

168 g CO2/km comb. - 258 HP (189 kW) - 7.3 Mpg

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2025) Mercedes 300 AMG Line Premium Plus 258 HP | Super price

- GLC 4Matic AMG Line Premium Plus

258 HP (189 kW)

167 g CO2/km comb.

HP91QJ, Buckinghamshire

Super price

You save £6,867

HP91QJ, Buckinghamshire

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2025) Mercedes 300 AMG Line Premium Plus 258 HP | Super price

- GLC4Matic AMG Line Premium Plus

258 HP (189 kW)

167 g CO2/km comb.

NN156XY Derby, Northamptonshire

Super price

You save £7,001

NN156XY Derby, Northamptonshire

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2025) Mercedes 300 AMG Line Premium Plus 258 HP | Good price

GLC4Matic AMG Line Premium Plus

258 HP (189 kW)

167 g CO2/km comb.

RG18EQ, Berkshire

Good price

You save £3,391

RG18EQ, Berkshire

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2025) Mercedes 300 AMG Line Premium Plus 258 HP | Super price

- GLC4Matic AMG Line Premium Plus

258 HP (189 kW)

167 g CO2/km comb.

CM13BH Chelmsford, Essex

Super price

You save £4,900

CM13BH Chelmsford, Essex

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2025) Mercedes 300 AMG Line Premium Plus 258 HP | Super price

- GLC4Matic AMG Line Premium Plus

258 HP (189 kW)

167 g CO2/km comb.

Super price

You save £5,305

Used (2024) Mercedes 300 AMG Line Premium 258 HP | Super price

GLC GLC4Matic AMG Line Premium 5dr

258 HP (189 kW)

RG21 6YH Basingstoke, Hampshire

Super price

You save £3,605

RG21 6YH Basingstoke, Hampshire

Visit Motors.co.uk

Used (2025) Mercedes 300 AMG Line Premium Plus 258 HP | Good price

GLC4Matic AMG Line Premium Plus

258 HP (189 kW)

170 g CO2/km comb.

HP9 1QJ Buckinghamshire, Buckinghamshire

Good price

You save £3,020

HP9 1QJ Buckinghamshire, Buckinghamshire

Visit Vertumotors.com

Used (2024) Mercedes 300 AMG line 258 HP | Super price

GLC Glc4Matic Amg Line 5Dr

258 HP (189 kW)

ST16 2DT Stafford, Staffordshire

Super price

You save £6,320

ST16 2DT Stafford, Staffordshire

Visit Motors.co.uk

Used (2025) Mercedes 300 AMG Line Premium 258 HP | Super price

GLC4Matic AMG Line Premium 5dr

258 HP (189 kW)

171 g CO2/km comb.

Leicester, Leicestershire

Super price

You save £5,623

Leicester, Leicestershire

Visit Group1auto.co.uk

Used (2023) Mercedes 300 AMG line 258 HP | Super price

GLC GLC4Matic AMG Line 5dr

258 HP (189 kW)

KT17 1JG Epsom, Surrey

Super price

You save £3,605

KT17 1JG Epsom, Surrey

Visit Motors.co.uk

Featured deals

Carwow

Used 2023 Mercedes 300 AMG Line Premium Estate | £47,110 (Fair price)

Mercedes 300 GLC4Matic AMG Line Premium 5dr 9G-Tronic Petrol Estate

Fair price

HP91QJ, Buckinghamshire

171 g CO2/km comb. - 258 HP (189 kW) - 38.0 Mpg

Carwow

Used 2024 Mercedes 300 AMG line Estate | £51,210 (Fair price)

Mercedes 300 - GLC4Matic AMG Line Prem [Pan] 5dr 9G-Tronic

Fair price

Estimated price £50,854

168 g CO2/km comb. - 258 HP (189 kW) - 7.3 Mpg

Carwow

Used 2025 Mercedes 300 AMG Line Premium Plus Estate | £52,409 (Good price)

Mercedes 300 GLC4Matic AMG Line Premium Plus 5dr 9G-Tronic Petrol Estate

Good price

You save £3,391

RG18EQ, Berkshire

167 g CO2/km comb. - 258 HP (189 kW) - 38.0 Mpg

Carwow

Used 2025 Mercedes 300 AMG Line Premium Plus Estate | £46,995 (Super price)

Mercedes 300 - GLC4Matic AMG Line Premium Plus 5dr 9G-Tronic

Super price

You save £5,305

167 g CO2/km comb. - 258 HP (189 kW) - 7.4 Mpg

Used (2024) Mercedes 300 AMG line 258 HP | Super price

GLC4Matic AMG Line 5dr 9G-Tronic -

258 HP (189 kW)

171 g CO2/km comb.

Stortford, Hertfordshire

Super price

You save £6,750

Stortford, Hertfordshire

Visit Group1auto.co.uk

Used (2025) Mercedes 300 AMG Line Premium 258 HP | Super price

GLC4Matic AMG Line Premium 5dr

258 HP (189 kW)

171 g CO2/km comb.

Cambridge, Cambridgeshire

Super price

You save £5,005

Cambridge, Cambridgeshire

Visit Group1auto.co.uk

Used (2024) Mercedes 300 AMG line 258 HP | Super price

GLC4Matic AMG Line 5dr 9G-Tronic -

258 HP (189 kW)

171 g CO2/km comb.

Hertford, Hertfordshire

Super price

You save £6,150

Hertford, Hertfordshire

Visit Group1auto.co.uk

Used (2024) Mercedes 300 AMG line 258 HP | Super price

GLC4Matic AMG Line 5dr 9G-Tronic -

258 HP (189 kW)

171 g CO2/km comb.

Nottingham, Nottinghamshire

Super price

You save £6,510

Nottingham, Nottinghamshire

Visit Group1auto.co.uk

Used (2024) Mercedes 300 AMG line 258 HP | Super price

GLC GLC4Matic AMG Line 5dr

258 HP (189 kW)

ME15 9YN Maidstone, Kent

Super price

You save £6,101

ME15 9YN Maidstone, Kent

Visit Motors.co.uk

Used (2024) Mercedes 300 AMG line 258 HP | Super price

GLC4Matic AMG Line 5dr 9G-Tronic -

258 HP (189 kW)

171 g CO2/km comb.

Warrington, Cheshire

Super price

You save £6,605

Warrington, Cheshire

Visit Group1auto.co.uk

Used (2023) Mercedes 300 AMG line 258 HP | Super price

GLC4Matic AMG Line 5dr 9G-Tronic -

258 HP (189 kW)

171 g CO2/km comb.

Cambridge, Cambridgeshire

Super price

You save £3,450

Cambridge, Cambridgeshire

Visit Group1auto.co.uk

Used (2023) Mercedes 300 AMG line 258 HP | Super price

GLC4Matic AMG Line 5dr 9G-Tronic -

258 HP (189 kW)

171 g CO2/km comb.

Cambridge, Cambridgeshire

Super price

You save £4,150

Cambridge, Cambridgeshire

Visit Group1auto.co.uk

Used (2024) Mercedes 300 AMG Line Premium 258 HP | Super price

GLC4Matic AMG Line Premium 5dr

258 HP (189 kW)

171 g CO2/km comb.

Coventry, West Midlands

Super price

You save £4,450

Coventry, West Midlands

Visit Group1auto.co.uk

Used (2023) Mercedes 300 AMG line 258 HP | Super price

GLC GLC4Matic AMG Line 5dr

258 HP (189 kW)

DY8 1ET Stourbridge, West Midlands

Super price

You save £3,894

DY8 1ET Stourbridge, West Midlands

Visit Motors.co.uk

Featured deals

Carwow

Used 2024 Mercedes 300 AMG line Estate | £51,420 (Fair price)

Mercedes 300 - GLC4Matic AMG Line Prem [Pan] 5dr 9G-Tronic

Fair price

Estimated price £50,854

168 g CO2/km comb. - 258 HP (189 kW) - 7.3 Mpg

Carwow

Used 2025 Mercedes 300 AMG Line Premium Plus Estate | £47,100 (Super price)

Mercedes 300 - GLC4Matic AMG Line Premium Plus 5dr 9G-Tronic

Super price

You save £4,900

CM13BH Chelmsford, Essex

167 g CO2/km comb. - 258 HP (189 kW) - 7.3 Mpg

Carwow

Used 2025 Mercedes 300 AMG Line Premium Plus Estate | £53,380 (Fair price)

Mercedes 300 - GLC4Matic AMG Line Premium Plus 5dr 9G-Tronic

Fair price

HP91QJ, Buckinghamshire

167 g CO2/km comb. - 258 HP (189 kW) - 7.3 Mpg

Carwow

Used 2018 Audi A6 Allroad Sport Estate | £19,099 (Fair price)

Audi A6 Allroad -3.0 TDI [272] Quattro Sport 5dr S Tronic

Fair price

CW73AL, Cheshire

149 g CO2/km comb. - 272 HP (200 kW) - 5.6 Mpg

Used (2024) Mercedes 300 AMG line 258 HP | Super price

GLC4Matic AMG Line 5dr 9G-Tronic -

258 HP (189 kW)

171 g CO2/km comb.

Derby, Derbyshire

Super price

You save £6,850

Derby, Derbyshire

Visit Group1auto.co.uk

Used (2024) Mercedes 300 AMG line 258 HP | Super price

GLC4Matic AMG Line 5dr 9G-Tronic -

258 HP (189 kW)

171 g CO2/km comb.

Warrington, Cheshire

Super price

You save £6,610

Warrington, Cheshire

Visit Group1auto.co.uk

Used (2023) Mercedes 300 AMG Line Premium 258 HP | Good price

GLC4Matic AMG Line Premium 5dr

258 HP (189 kW)

171 g CO2/km comb.

Stratford-Upon-Avon, Warwickshire

Good price

You save £1,705

Stratford-Upon-Avon, Warwickshire

Visit Group1auto.co.uk

Used (2025) Mercedes 300 AMG Line Premium 258 HP | Super price

GLC GLC4Matic AMG Line Premium 5dr

258 HP (189 kW)

PR2 2TY Preston, Lancashire

Super price

You save £7,120

PR2 2TY Preston, Lancashire

Visit Motors.co.uk

Used (2023) Mercedes 300 AMG Line Premium 258 HP | Good price

GLC Glc4Matic Amg Line Premium 5Dr

258 HP (189 kW)

TN24 0HB Ashford, Kent

Good price

You save £2,150

TN24 0HB Ashford, Kent

Visit Motors.co.uk

Featured deals

Carwow

Used 2019 BMW 335 M Sport Estate | £14,495 (Super price)

BMW 335 - 3 Series Touring d xDrive M Sport 5dr Step Auto

Super price

You save £2,705

OL96HT, Manchester

193 g CO2/km comb. - 313 HP (230 kW) - 7.2 Mpg

Carwow

Grey Used 2014 BMW 335 M Sport Estate | £12,995 (Fair price)

BMW 335 3 Series d xDrive M Sport 5dr Step Auto

Fair price

Estimated price £12,464

OL96HT, Manchester

148 g CO2/km comb. - 313 HP (230 kW) - 5.6 Mpg

Carwow

Used 2019 BMW 335 M Sport Estate | £19,750 (Fair price)

BMW 335 - 3 Series Touring d xDrive M Sport 5dr Step Auto

Fair price

Estimated price £18,931

OL96HT, Manchester

193 g CO2/km comb. - 313 HP (230 kW) - 7.2 Mpg

Carwow

Used 2025 Mercedes C300 AMG Line Premium Plus Estate | £32,650 (Good price)

Mercedes C300 - C-Class EstateAMG Line Premium Plus 5dr 9G-Tronic

Good price

You save £2,850

CM13BH Chelmsford, Essex

137 g CO2/km comb. - 265 HP (194 kW) - 5.3 Mpg

Showing 1 - 25 of 81 results

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

Other body types for Mercedes 300

Convertible (7)

Convertible

7 cars

Coupe (20)

Coupe

20 cars

MPV (6)

MPV

6 cars

Saloon (5)

Saloon

5 cars