Rolls-Royce’s revamped A350 engine is beating its own fuel-savings target by nearly double, delivering up to $9 million a year for major operators as 2026 jet fuel costs surge.
Rolls-Royce’s upgraded engine for the Airbus A350-900 is cutting fuel consumption by 1.8% in everyday airline service, nearly double its original 1% target, the company said Thursday, translating into millions of dollars in annual savings for major operators.
The Trent XWB-84 Enhanced Performance engine, the sole powerplant option for the A350-900, has logged roughly 100,000 flight hours across 34 engines and three major operators since entering commercial service in May 2025, Rolls-Royce said. The confirmed fuel-burn improvement equates to about $450,000 in annual savings per aircraft, or roughly $9 million a year for an airline running a fleet of 20 A350-900s, according to the company.
Rob Watson, president of civil aerospace at Rolls-Royce, discussed the results with reporters Thursday at a round-table briefing ahead of the Farnborough International Airshow.
“We are thrilled to bits, and I think in the current environment, if you’re an aircraft operator, that SFC showing up will do better than expected is hugely valuable. 1% SFC on an 84 at an aircraft level is worth about just under $500,000 a year. So if you’ve got 20 aircraft on your fleet, it’s delivering $9 or $10 million worth of cost improvement straight to your bottom line,” Watson said, according to Simple Flying.
The engine’s real-world performance arrives as airlines confront a sharp rise in fuel costs. The International Air Transport Association projects global airline fuel spending will climb to $350 billion in 2026, up from $252 billion in 2025, as Middle East supply disruptions push jet fuel prices to an average of about $152 a barrel. Fuel is expected to account for 31.4% of airline operating expenses this year, up from 25.4% in 2025, while industrywide net profits are forecast to fall to $23 billion in 2026 from $45 billion in 2025.
Against that backdrop, an engine upgrade that outperforms its own certified target by nearly double carries direct significance for every A350-900 operator’s bottom line, since Rolls-Royce holds the exclusive contract to power the aircraft.
How the Engine Beat Its Target
The performance gain stems from a series of aerodynamic and materials improvements that optimized airflow through the engine, drawing on technology developed for the more powerful Trent XWB-97 that powers the larger A350-1000, along with Rolls-Royce’s Advance research program. The changes touched turbine cooling and aerodynamics, the secondary air system, interstage seals and active turbine tip clearance control, according to Rolls-Royce.
The Trent XWB-84 EP has a bypass ratio of 9.6-to-1, an overall pressure ratio of 50-to-1 and a maximum thrust rating of up to 84,000 pounds. It is certified with a two-decibel noise reduction compared with the standard Trent XWB-84. EASA certified the engine in December 2024, followed by certification of the A350-900 aircraft variant equipped with it on April 11, 2025.
Delta Leads U.S. Adoption
Delta Air Lines was the launch customer for the Trent XWB-84 EP, putting the engine into service in May 2025. Before a January order, Delta operated 40 Trent XWB-84-powered A350-900s and 39 Trent 7000-powered A330neos, with 20 additional A350-1000s on order powered by the Trent XWB-97.
On Jan. 27, 2026, Delta ordered 30 Trent XWB-84 EP engines for 15 new A350-900 aircraft, along with 32 Trent 7000 engines for 16 A330neos, Rolls-Royce said. Delta expanded its widebody commitment further on June 25, when it announced an additional 31 Airbus widebody aircraft — 16 A330-900s and 15 A350-900s — bringing its projected total A350 fleet, including the larger A350-1000, to 79 aircraft.
A Widening Operator Base
Singapore Airlines and Turkish Airlines round out the three operators in Rolls-Royce’s June performance data. Singapore Airlines has flown the Trent XWB-84 for a decade across its A350-900 medium-, long- and ultra-long-haul routes. Turkish Airlines is the world’s largest Trent XWB operator, with 100 Trent XWB-84 engines on order for A350-900 deliveries running from 2025 through 2033.
Air France is expected to begin operating the Trent XWB-84 EP in the summer of 2026, which would add a fourth operator to the performance dataset.
Adam Davies, Rolls-Royce’s director of commercial aviation for the Trent XWB program, said the results demonstrate the effectiveness of the company’s investment in the Trent engine family and support airline goals around operational efficiency and sustainability.
Sustainability Certification
The Trent XWB-84 EP is already certified to operate on blends of up to 50% sustainable aviation fuel and has undergone testing toward eventual certification for 100% SAF, Rolls-Royce said. The fuel-burn reduction also lowers carbon dioxide emissions and reduces aircraft noise.
The A350-900 typically seats 300 to 350 passengers in a three-class configuration and has a maximum range of 8,500 nautical miles.
A Longer-Term Investment
The Enhanced Performance engine is the product of a broader commitment Rolls-Royce made to the Trent family in February 2024, when it announced a 1 billion-pound ($1.33 billion) investment in continuous improvement across the engine line. The company followed that a month later with a 55 million-pound expansion of engine-building capacity at its Derby, England, and Dahlewitz, Germany, sites, adding more than 300 front-line manufacturing jobs.
The Trent XWB family, which first entered service in January 2015, surpassed 20 million flight hours in October 2024, according to Rolls-Royce. Rolls-Royce has previously reported a dispatch reliability rate of 99.9% for the Trent XWB-84, though the fleet has recorded isolated in-flight incidents in past years. Rolls-Royce has said more than 1,700 Trent XWB engines are in service or on order across 45 operators worldwide, according to the company.
Watson’s remarks came ahead of the Farnborough International Airshow, the biennial aerospace and defense trade show that runs July 20-24 at the Farnborough International Exhibition & Conference Centre in Hampshire, England.
Key Takeaways
- Rolls-Royce’s Trent XWB-84 EP engine is delivering a 1.8% fuel-burn reduction in service, nearly double its certified 1% target.
- For an airline operating 20 Airbus A350-900s, that improvement translates to roughly $9 million in annual fuel savings, according to Rolls-Royce; company president Rob Watson cited a figure of “$9 or $10 million” in remarks to reporters.
- Delta Air Lines, Singapore Airlines and Turkish Airlines are among the first operators recording the gains, with Air France set to join this summer.
- The milestone lands as surging 2026 jet fuel prices threaten to nearly halve global airline profits, per IATA forecasts.
- The engine is certified for blends of up to 50% sustainable aviation fuel, with testing underway toward 100% SAF compatibility.