Chelsea have registered a 4-0 away victory over Steaua Bucuresti in their Champions League Group E clash.

Jose Mourinho's side could have surged ahead in Bucharest as early as the fourth minute had Andre Schurrle been better with his shot.

Minutes later the Blues were forced into making a change as Fernando Torres got injured and had to be replaced by Samuel Eto'o.

However, that did not appear to deter Chelsea as they went ahead in the 19th minute thanks to Ramires, who dinked the ball over Steaua goalkeeper Ciprian Tatarusanu after picking up a loose ball.

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Juan Mata went close to making it 2-0 to the Premier League outfit on the half-hour mark when he was set up by Oscar, but the Spanish midfielder's shot lacked power and was easily saved by Tatarusanu.

Chelsea did double their lead on the stroke of half time, thanks to an own goal from Daniel Georgievski. Eto'o took a shot on the Steaua goal that Tatarusanu parried straight at the defender and saw the ball fly into the net.

The 2012 European champions made it 3-0 10 minutes into the second half when Ramires found the target again.

Schurrle turned past his defender on the left, cut inside and played the ball to Oscar, who set up the Brazilian midfielder for his second goal of the evening.

Oscar was unlucky not to score Chelsea's fourth goal in the 67th minute when he saw his shot from 20 yards come back off the crossbar.

Frank Lampard made it 4-0 to Chelsea in the 90th minute when he rifled an effort home from 18 yards.