UK budget carrier EasyJet will equip eight of its future A320 fleet with Airbus's sharklet wing-tip modifications as part of a wider fuel-saving initiative.
For delivery from August 2013, the aircraft are the final tranche of 14 narrowbodies the airline will receive from April this year until the end of summer 2014.
All of the A320s will also be fitted with new lightweight seats from German manufacturer Recaro. Its SL 3510 model has no recline mechanism and a slim backrest made of elastic netting instead of conventional foam padding.
At just over 9kg (20lb), the seat is about 26% lighter than the airline's existing seats, saving around 600kg per aircraft, says EasyJet.
The airline will also introduce new, lightweight service trolleys across its 214-strong fleet from April.
Taken as a whole, the three measures will shave around £2.7 million ($4 million) from the carrier's approximately £1.2 billion fuel bill per year, says EasyJet.