08 Thanks to sharklets, the Lufthansa A320 is always more fuel-efficient in flight, with fuel savings of up to 4%. 09 / 10 In 2013 the Lufthansa Group ordered highly fuel-efficient Boeing 777-9X [Ú09] and A350-900 [Ú10] aircraft, making its entry into the 2-liter class. [Ú 08] [Ú 10] [Ú 09] 25%less fuel 20%reduction in unit costs 34 // Sustainable Business Practice