Rolls-Royce Group Plc climbed 1.3 percent to 645.5 pence after Citigroup Inc. raised its recommendation for the world’s second-largest maker of engines to “buy” from “hold.”

全球第二大引擎生产商劳斯莱斯集团股价上涨1.3%，至645.5便士，花旗集团把劳斯莱斯股票评级从持有上调为买入。

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Rolls-Royce's relies on more efficient engine technology - jointly developed with others within the BMW group.

BBC: Rolls-Royce and rivals face challenging times