Find the 10 most fuel economical, fastest, environmentally friendly (CO2 emissions), expensive cars in our database of nearly 10,000 vehicles on this page. Adversely, find out the thirstiest, most polluting vehicles too! Click on one of the links below to show the listings.

Top 10 Cars With Least CO2 Emissions

1 - Smart Fortwo 2dr coupe 0.8 cdi Passion

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£8972
85 mph
19.8 secs
85.6 mpg
44 bhp
81 lb/ft
88 g/km

2 - Seat Ibiza 5dr estate 1.2 TDI CR 75 Ecomotiv SE Copa

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£15345
104 mph
14.6 secs
80.7 mpg
74 bhp
133 lb/ft
92 g/km

3 - Fiat 500 3dr hatchback 0.9 Twin Air

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£12000
108 mph
11 secs
68.9 mpg
84 bhp
74 lb/ft
95 g/km

4 - Fiat 500 2dr convertible 0.9 Twinair Lounge S/S

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£15265
108 mph
11 secs
68.9 mpg
84 bhp
74 lb/ft
95 g/km

5 - Lexus CT 5dr hatchback 200h SE-I

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£23485
113 mph
10 secs
68.9 mpg
134 bhp
105 lb/ft
96 g/km

6 - Toyota iQ 3dr hatchback 1.0

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£9495
93 mph
14.7 secs
65.7 mpg
67 bhp
67 lb/ft
99 g/km

7 - Hyundai i10 5dr hatchback 1.0 Blue

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£9195
93 mph
14.8 secs
67.3 mpg
68 bhp
70 lb/ft
99 g/km

8 - Nissan Pixo 5dr hatchback 1.0 Acenta

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£7745
96 mph
11 secs
64.2 mpg
67 bhp
66 lb/ft
103 g/km

9 - Suzuki Alto 5dr hatchback 1.0 Cruz

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£6953
96 mph
13.5 secs
64.2 mpg
67 bhp
66 lb/ft
103 g/km

10 - Toyota Prius 5dr hatchback 1.5 Hybrid T Spirit

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£21210
106 mph
10.9 secs
65.7 mpg
112 bhp
353 lb/ft
104 g/km

11 - Smart Fortwo 2dr cabriolet 1.0 70 mhd Limited Three

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£11900
90 mph
13.3 secs
64.2 mpg
70 bhp
68 lb/ft
105 g/km

12 - Honda Insight 5dr hatchback 1.3 ES

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£16790
113 mph
12.5 secs
61.4 mpg
87 bhp
89 lb/ft
105 g/km

13 - Peugeot 107 5dr hatchback 1.0 Allure

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£10340
100 mph
14.2 secs
62.7 mpg
67 bhp
69 lb/ft
106 g/km

14 - Peugeot 107 3dr hatchback 1.0 Allure

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£9990
100 mph
14.2 secs
62.7 mpg
67 bhp
69 lb/ft
106 g/km

15 - Citroen C1 5dr hatchback 1.0i Splash

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£8695
98 mph
13.7 secs
62.8 mpg
67 bhp
68 lb/ft
106 g/km

16 - Citroen C1 3dr hatchback 1.0i VTR+

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£9345
98 mph
13.7 secs
62.8 mpg
67 bhp
68 lb/ft
106 g/km

17 - Toyota Aygo 5dr hatchback 1.0 VVT-i

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£7380
98 mph
14.2 secs
62.8 mpg
67 bhp
69 lb/ft
106 g/km

18 - Toyota Aygo 3dr hatchback 1.0 VVT-i

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£7040
98 mph
14.2 secs
62.8 mpg
67 bhp
69 lb/ft
106 g/km

19 - Peugeot 508 5dr sw 1.6 e-HDi 112 Access

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£20075
122 mph
11.9 secs
64.2 mpg
110 bhp
210 lb/ft
109 g/km

20 - Peugeot 508 4dr saloon 1.6 e-HDi 112 Access

Price:
Top Speed:
0-60:
Fuel Economy:
Horse Power:
Torque:
CO2 Emissions:
£19050
122 mph
11.9 secs
64.2 mpg
110 bhp
210 lb/ft
109 g/km