Besides a few minor aerodynamic changes, the Korean automaker is enhancing the facelift version 2010  Hyundai i20 model sold on UK’s market with the the company’s fuel efficient 1.2-litre petrol engine which has CO2 emissions of 119 grams per Km.
On the 1.4-litre version Hyundai i20 improvements have also been made as CO2 emissions have dropped to 129 grams per Km and fuel consumption has been reduced with 4.3 mpg.
On the 75PS and 90PS diesel version CO2 emissions are now 110 grams per Km and additionally the 90PS version Hyundai i20 is now being offered with a 6-speed gearbox that enables a 7.2 percent lower consumption.
Apart from these mechanical improvements the Hyundai i20 comes with a new spoiler that improves airflow around the wheels while at the interior the automaker adds blue dashboard and
instrument illumination and Bluetooth connectivity.  
The Hyundai i20 price starts at 9,520 GBP.
Hyundai press release :
The Hyundai i20 is getting blue on the inside and greener under the
Minor changes to the aerodynamics and engine have resulted in a boost
in fuel efficiency for all engines, while the interior is now more
stylish and better equipped.
The best-selling 1.2-litre petrol engine, already one of the most
efficient in the class, drops its emissions by 5g/km to 119g/km. This
results in a tax disc costing just £30 and company car tax
benefit-in-kind rates of just 10%.
Buyers wanting the extra power of the 1.4-litre version will see even
greater savings, with the Style models dropping by 13g/km to just
129g/km. This results in a drop of two Vehicle Excise Duty bands and a
4.3mpg improvement.
The two diesel engines also see significant savings, with the 75PS
model dropping by 6g/km to just 110g/km. The 90PS version gains a
six-speed gearbox which helps it achieve a 7.2% improvement in fuel
These improvements have been made possible by adding a small spoiler
to the underneath of the car to improve airflow around the wheels,
fitting an Eco Drive indicator in the instrument panel to suggest the
best point to change gear, using low friction engine oil and an
alternator management system.
Inside, there are two blue additions. Firstly, the dashboard and
instrument illumination is now blue rather than red, bringing the i20
into line with larger Hyundai models.
Secondly, Bluetooth phone connectivity with voice recognition is now
added as standard on all models except the entry-level Classic. 
The new i20 is available to order now, with prices starting at
£9,520. All i20s are covered by a manufacturer-backed, unlimited mileage
Five Year Warranty and are equipped with ESP and air conditioning as

Source: Hyundai