Daniel Sturridge opened the scoring for the Stamford Bridge hosts within the first 60 seconds of the game, before John Terry doubled the Blues’ advantage on 13 minutes.
Fernando Torres, who scored the equaliser against Barcelona at Camp Nou, looked back to his best and scored a hat-trick, two before the break and one just after the hour mark.
Chelsea’s scoring was wrapped up by Florent Malouda, before Djibril Cisse bagged a consolation for the R’s with six minutes left on the clock.
Roberto Di Matteo was pleased with his side’s efforts, but admitted surprise at the extent of the victory.
“I have to be honest, after the midweek Champions League game, sometimes it is very difficult to re-focus,” the Italian told Sky Sports.
“But the players did extremely well today to focus on this Premier League game and I have to say that they surprised me.
“We played well today. We played some good football. We scored goals and we were after three points so we are pleased with the way we got them.”
Di Matteo went on to praise hat-trick hero Torres, who he feels is looking sharp.
“He deserves all the credit.
“He has been working hard and the goals don’t always come. I was always pleased with his attitude and work-rate and it’s pleasing to see the strikers score for us,” the coach concluded.
The win leaves Chelsea a point behind Newcastle and Tottenham.
By Gareth McKnight