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Used Seat diesel • 1,221 listings compared on price

Market overview: Market overview for used Seat diesel (October-2026): AutoUncle has price-compared 1,221 used Seat diesel vehicles from 40 dealer sites. The three most popular models are currently Seat Leon, Seat Ateca, Seat Alhambra, with prices ranging from £1,999 to £19,995 and a median price of £8,495. The most common body type is hatchback. AutoUncle has identified 227 cars currently listed below expected market value, and 36.8% of listings have had a price reduction in the last 30 days (largest saving: £3,000). The average selling time for a used Seat diesel is 23 days. (Source: AutoUncle market data, October-2026)

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Used Seat Leon FR 184 HP (135 kW) 2015 Blue Hatchback

(2015) Seat Leon FR 184 HP

Good price

DH33EJ County Durham, Durham

121 g CO2/km comb. - 184 HP (135 kW) - 4.6 Mpg

Carwow

Used Seat Ateca 4Drive 190 HP (139 kW) 2017 Silver SUV

(2017) Seat Ateca 4Drive 190 HP

Good price

PE134AX Fenland, Cambridgeshire

142 g CO2/km comb. - 190 HP (139 kW) - 5.0 Mpg

Carwow

Used Seat Arona SE Technology 116 HP (85 kW) 2018 Silver SUV

(2018) Seat Arona SE Technology 116 HP

Fair price

CM9 4LL Heybridge, Essex

114 g CO2/km comb. - 116 HP (85 kW) - 4.3 Mpg

Carwow

Used Seat Ateca SE Technology 150 HP (110 kW) 2019 Grey SUV

(2019) Seat Ateca SE Technology 150 HP

Good price

You save £1,700

N11 1GN Greater London, London

148 g CO2/km comb. - 150 HP (110 kW) - 4.4 Mpg

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-5%

1 / 4

Used (2019) Seat Ateca XCELLENCE 116 HP | Good price

85015

Apr 2019
55,355 miles
Trim level: XCELLENCE
1.6L Diesel
SUV
Automatic
116 HP (85 kW)
CO2 emissions: 128 g CO2/km comb.
4.9 mpg
Details

Good price

£11,172

£11,767

LE11 5HN Leicestershire, Leicestershire

Availability verified

-2%

Used (2019) Seat Tarraco 4Drive 150 HP | Good price

2020 Xcellence 2.0 TDI Xcellence

2019
76,760 miles
Trim level: 4Drive
2.0L Diesel
SUV
Automatic
150 HP (110 kW)
CO2 emissions: 181 g CO2/km comb.
6.9 mpg
Details

Good price

£13,880

£14,180

London, London

Availability verified

-12%

1 / 4

Used (2021) Seat Ateca 4Drive 150 HP | Good price

2021 FR Sport 2.0 TDI 150 DSG

2021
17,752 miles
Trim level: 4Drive
2.0L Diesel
SUV
Automatic
150 HP (110 kW)
CO2 emissions: 155 g CO2/km comb.
6.1 mpg
Details

Good price

£17,299

£19,799

CW73AL Cheshire West And Chester, Cheshire

Availability verified

New

Used (2022) Seat Tarraco XCELLENCE 150 HP | Super price

2022 Xcellence 2.0 TDI Xcellence

2022
92,997 miles
Trim level: XCELLENCE
2.0L Diesel
SUV
Manual
150 HP (110 kW)
CO2 emissions: 149 g CO2/km comb.
5.5 mpg
Details

Super price

£12,495

S711AJ

Availability verified

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Used Seat Leon SE 105 HP (77 kW) 2014 Silver Hatchback

(2014) Seat Leon SE 105 HP

Good price

You save £1,201

PE4 6QZ Peterborough, Cambridgeshire

99 g CO2/km comb. - 105 HP (77 kW) - 3.8 Mpg

Carwow

Used Seat Ateca 4Drive 150 HP (110 kW) 2018 Silver SUV

(2018) Seat Ateca 4Drive 150 HP

Fair price

WV10 0AE West Midlands, West Midlands

134 g CO2/km comb. - 150 HP (110 kW) - 4.9 Mpg

Carwow

Used Seat Leon SE Dynamic 116 HP (85 kW) 2019 Blue Hatchback

(2019) Seat Leon SE Dynamic 116 HP

Fair price

DE73 7HL Stenson, Derbyshire

111 g CO2/km comb. - 116 HP (85 kW) - 5.1 Mpg

Carwow

Used Seat Arona SE Technology 116 HP (85 kW) 2018 Silver SUV

(2018) Seat Arona SE Technology 116 HP

Good price

You save £1,201

CW73AL Cheshire West And Chester, Cheshire

114 g CO2/km comb. - 116 HP (85 kW) - 68.9 Mpg

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Used (2018) Seat Arona SE Technology 116 HP | Good price

2018 SE Technology Lux 1.6 TDI

2018
43,710 miles
Trim level: SE Technology
1.6L Diesel
SUV
Manual
116 HP (85 kW)
CO2 emissions: 114 g CO2/km comb.
68.9 mpg
Details

Good price

£8,499

£9,599

CW73AL Cheshire West And Chester, Cheshire

Availability verified

-9%

1 / 4

Used (2023) Seat Ateca 4Drive 150 HP | Good price

2.0 TDI 150 Xperience Lux 5dr DSG

2023
20,228 miles
Trim level: 4Drive
2.0L Diesel
SUV
Automatic
150 HP (110 kW)
CO2 emissions: 157 g CO2/km comb.
6.1 mpg
Details

Good price

£19,349

£21,449

SA7 9AG Llansamlet, West Glamorgan

Availability verified

-24%

1 / 4

Used (2023) Seat Ateca FR Sport 150 HP | Super price

2023 FR Sport 2.0 TDI 150

2023
24,357 miles
Trim level: FR Sport
2.0L Diesel
SUV
Manual
150 HP (110 kW)
CO2 emissions: 139 g CO2/km comb.
5.1 mpg
Details

Super price

£15,099

£19,999

DE216BZ Derby, Derbyshire

Availability verified

-26%

1 / 4

Used (2022) Seat Ateca FR Sport 150 HP | Good price

2022 | 2.0 TDI FR Sport DSG Euro 6

2022
52,990 miles
Trim level: FR Sport
2.0L Diesel
SUV
Automatic
150 HP (110 kW)
CO2 emissions: 142 g CO2/km comb.
5.5 mpg
Details

Good price

£15,660

£21,410

PE1 5XL Peterborough, Cambridgeshire

Availability verified

-9%

1 / 4

Used (2021) Seat Ateca 4Drive 150 HP | Super price

2.0 TDI 150 FR 5dr DSG 4Drive

2021
36,100 miles
Trim level: 4Drive
2.0L Diesel
SUV
Automatic
150 HP (110 kW)
CO2 emissions: 155 g CO2/km comb.
6.1 mpg
Details

Super price

£15,449

£17,099

PO2 9RN Hilsea, Hampshire

Availability verified

-7%

1 / 4

Used (2023) Seat Ateca Xperience Lux 150 HP | Good price

2023 Xperience Lux 2.0 TDI 150

2023
21,862 miles
Trim level: Xperience Lux
2.0L Diesel
SUV
Automatic
150 HP (110 kW)
CO2 emissions: 142 g CO2/km comb.
5.3 mpg
Details

Good price

£18,449

£19,899

S9 1XZ Park, South Yorkshire

Availability verified

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Used Seat Leon FR 150 HP (110 kW) 2017 Black Hatchback

(2017) Seat Leon FR 150 HP

Fair price

PE4 6QZ Peterborough, Cambridgeshire

112 g CO2/km comb. - 150 HP (110 kW) - 4.4 Mpg

Carwow

Used Seat Ateca 4Drive 150 HP (110 kW) 2018 Grey SUV

(2018) Seat Ateca 4Drive 150 HP

Fair price

134 g CO2/km comb. - 150 HP (110 kW) - 4.9 Mpg

Carwow

Used Seat Leon SE Dynamic 116 HP (85 kW) 2020 White Hatchback

(2020) Seat Leon SE Dynamic 116 HP

Good price

You save £1,330

NR3 2AW Norfolk, Norfolk

129 g CO2/km comb. - 116 HP (85 kW) - 4.1 Mpg

Carwow

Used Seat Leon FR 150 HP (110 kW) 2018 Grey Hatchback

(2018) Seat Leon FR 150 HP

Fair price

MK44 3BH Bedford, Bedfordshire

112 g CO2/km comb. - 150 HP (110 kW) - 4.4 Mpg

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Used (2019) Seat Ateca SE Technology 150 HP | Good price

2.0 TDI SE Technology SUV 5dr

2019
67,417 miles
Trim level: SE Technology
2.0L Diesel
SUV
Manual
150 HP (110 kW)
CO2 emissions: 148 g CO2/km comb.
4.4 mpg
Details

Good price

£9,000

£10,600

N11 1GN Greater London, London

Availability verified

-5%

1 / 4

Used (2019) Seat Arona SE Technology 116 HP | Good price

1.6 TDI SE Technology Lux SUV 5dr

2019
74,896 miles
Trim level: SE Technology
1.6L Diesel
SUV
Manual
116 HP (85 kW)
CO2 emissions: 114 g CO2/km comb.
5 mpg
Details

Good price

£7,350

£7,750

WD3 3RT Croxley Green, Hertfordshire

Availability verified

-3%

1 / 4

Used (2019) Seat Ateca SE Technology 116 HP | Good price

2019 SE Technology 1.6 TDI

Mar 2019
84,657 miles
Trim level: SE Technology
1.6L Diesel
SUV
Manual
116 HP (85 kW)
CO2 emissions: 145 g CO2/km comb.
54 mpg
Details

Good price

£8,231

£8,495

NE61 6JN Northumberland, Northumberland

Availability verified

-9%

1 / 4

Used (2020) Seat Leon SE Dynamic 116 HP | Good price

2020 SE Dynamic 1.6 TDI

2020
49,025 miles
Trim level: SE Dynamic
1.6L Diesel
Hatchback
Manual
116 HP (85 kW)
CO2 emissions: 129 g CO2/km comb.
4.1 mpg
Details

Good price

£9,270

£10,240

NR3 2AW Norfolk, Norfolk

Availability verified

-7%

1 / 3

Used (2019) Seat Ateca SE Technology 116 HP | Good price

Se Technology Tdi Semi-auto

2019
75,358 miles
Trim level: SE Technology
1.6L Diesel
SUV
Automatic
116 HP (85 kW)
CO2 emissions: 156 g CO2/km comb.
5.6 mpg
Details

Good price

£9,300

£10,000

ME2 2NY Medway, Kent

Availability verified

-6%

1 / 4

Used (2023) Seat Ateca 4Drive 150 HP | Good price

2023 Xperience Lux 2.0 TDI 150 DSG

2023
27,296 miles
Trim level: 4Drive
2.0L Diesel
SUV
Automatic
150 HP (110 kW)
CO2 emissions: 157 g CO2/km comb.
47 mpg
Details

Good price

£19,000

£20,418

DE21 4SX Derby, Derbyshire

Availability verified

1 / 4

Used (2020) Seat Ateca FR 150 HP | Good price

2.0 TDI FR [EZ] 5dr DSG

2020
72,093 miles
Trim level: FR
2.0L Diesel
SUV
Automatic
150 HP (110 kW)
CO2 emissions: 153 g CO2/km comb.
5.8 mpg
Details

Good price

£11,999

S81 7AE Nottinghamshire, Nottinghamshire

Availability verified

-7%

1 / 4

Used (2023) Seat Ateca Xperience Lux 150 HP | Super price

TDI XPERIENCE LUX DSG

2023
56,201 miles
Trim level: Xperience Lux
2.0L Diesel
SUV
Automatic
150 HP (110 kW)
CO2 emissions: 142 g CO2/km comb.
5.5 mpg
Details

Super price

£15,420

£16,750

WS11 8LX Great Wyrley, Staffordshire

Availability verified

-5%

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Used (2022) Seat Leon SE 116 HP | Good price

2022 | 2.0 TDI SE Euro 6 (s/s)

2022
51,450 miles
Trim level: SE
2.0L Diesel
Hatchback
Manual
116 HP (85 kW)
CO2 emissions: 113 g CO2/km comb.
4.2 mpg
Details

Good price

£11,740

£12,470

PE1 5XL Peterborough, Cambridgeshire

Availability verified

-6%

1 / 2

Used (2019) Seat Tarraco XCELLENCE 150 HP | Good price

Tdi Xcellence First Edition

2019
62,854 miles
Trim level: XCELLENCE
2.0L Diesel
SUV
Manual
150 HP (110 kW)
CO2 emissions: 158 g CO2/km comb.
5.7 mpg
Details

Good price

£14,720

£15,755

BB1 3NU Lancashire, Lancashire

Availability verified

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Used Seat Arona SE Technology 116 HP (85 kW) 2019 White SUV

(2019) Seat Arona SE Technology 116 HP

Good price

You save £1,050

WD3 3RT Croxley Green, Hertfordshire

114 g CO2/km comb. - 116 HP (85 kW) - 5.0 Mpg

Carwow

Used Seat Ateca SE Technology 116 HP (85 kW) 2019 Grey SUV

(2019) Seat Ateca SE Technology 116 HP

Good price

You save £1,300

ME2 2NY Medway, Kent

156 g CO2/km comb. - 116 HP (85 kW) - 5.6 Mpg

Carwow

Used Seat Leon SE Dynamic 116 HP (85 kW) 2017 Purple Hatchback

(2017) Seat Leon SE Dynamic 116 HP

Fair price

PE321DD Norfolk, Norfolk

109 g CO2/km comb. - 116 HP (85 kW) - 4.1 Mpg

Carwow

Used Seat Ateca Ecomotive 116 HP (85 kW) 2017 Silver SUV

(2017) Seat Ateca Ecomotive 116 HP

Fair price

Estimated price £7,844

OL9 6HT Greater Manchester, Manchester

119 g CO2/km comb. - 116 HP (85 kW) - 4.3 Mpg

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Used (2014) Seat Leon SE 105 HP | Good price

1.6 TDI SE 5dr [Technology

2014
33,000 miles
Trim level: SE
1.6L Diesel
Hatchback
Manual
105 HP (77 kW)
CO2 emissions: 99 g CO2/km comb.
3.8 mpg
Details

Good price

£7,299

£7,449

PE4 6QZ Peterborough, Cambridgeshire

Availability verified

-10%

1 / 2

Used (2015) Seat Leon SE 110 HP | Good price

2015 SE 1.6 TDI 110

2015
71,700 miles
Trim level: SE
1.6L Diesel
Hatchback
Manual
110 HP (80 kW)
CO2 emissions: 102 g CO2/km comb.
4 mpg
Details

Good price

£5,800

£6,500

GU21 4XS Surrey, Surrey

Availability verified

1 / 4

Used (2015) Seat Leon FR 184 HP | Good price

2.0 TDI 184 FR 5dr [Technology

2015
63,446 miles
Trim level: FR
2.0L Diesel
Hatchback
Manual
184 HP (135 kW)
CO2 emissions: 121 g CO2/km comb.
4.6 mpg
Details

Good price

£6,995

DH33EJ County Durham, Durham

Availability verified

1 / 4

Used (2020) Seat Ateca 4Drive 150 HP | Super price

2.0 TDI FR [EZ] 5dr DSG 4Drive

2020
74,300 miles
Trim level: 4Drive
2.0L Diesel
SUV
Automatic
150 HP (110 kW)
CO2 emissions: 170 g CO2/km comb.
6.1 mpg
Details

Super price

£12,295

S80 2QD Nottinghamshire, Nottinghamshire

Availability verified

1 / 4

Used (2017) Seat Ateca 4Drive 190 HP | Good price

2.0 TDI Xcellence 5dr DSG

2017
112,185 miles
Trim level: 4Drive
2.0L Diesel
SUV
Automatic
190 HP (139 kW)
CO2 emissions: 142 g CO2/km comb.
5 mpg
Details

Good price

£8,499

PE134AX Fenland, Cambridgeshire

Availability verified

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Used Seat Arona SE Technology 95 HP (69 kW) 2018 White SUV

(2018) Seat Arona SE Technology 95 HP

Good price

You save £1,205

LE10 3DJ Leicestershire, Leicestershire

113 g CO2/km comb. - 95 HP (69 kW) - 4.3 Mpg

Carwow

Used Seat Ateca SE Technology 116 HP (85 kW) 2019 Red SUV

(2019) Seat Ateca SE Technology 116 HP

Good price

You save £1,069

NE61 6JN Northumberland, Northumberland

145 g CO2/km comb. - 116 HP (85 kW) - 54.0 Mpg

Carwow

Used Seat Leon SE Dynamic 110 HP (80 kW) 2016 Grey Hatchback

(2016) Seat Leon SE Dynamic 110 HP

Fair price

S9 3NH South Yorkshire, South Yorkshire

103 g CO2/km comb. - 110 HP (80 kW) - 4.1 Mpg

Carwow

Used Seat Arona SE Technology 95 HP (69 kW) 2019 White SUV

(2019) Seat Arona SE Technology 95 HP

Fair price

Carrville, Durham

126 g CO2/km comb. - 95 HP (69 kW) - 66.0 Mpg

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