France thanked a brace from Real Madrid's Karim Benzema as they thumped Estonia 4-0 in an impressive Euro 2012 tune-up to give Group D rivals England food for thought.

Bayern Munich's Franck Ribery set the ball rolling in the northern town of Le Mans with the opener on 24 minutes before Benzema made it 2-0 eight minutes before the break as the French found their form.

Benzema added another just two minutes after the restart before Paris Saint Germain forward Jeremy Menez made it four in stoppage time.

On the negative side for Laurent Blanc's men a central defensive partnership of Philippe Mexes, of Milan, and Valencia's Adil Rami had a few nervous moments but that failed to take the gloss off a morale-boosting win and, as a former stopper himself, Blanc should be capable of passing on some tips to his backline.

The coach said he was satisfied overall.

"It's three wins in three and so we can be satisfied. In some areas less so but overall it was a good evening," said Blanc, who noted even so that "sometimes we put ourselves in difficulty" at the back.

He forecast that against England "it will be more difficult, a more rigorous test and we will have to play it in simpler fashion."

France have now gone 21 games unbeaten and the memories of a disastrous 2010 World Cup are finally beginning to fade away.

They meet England next Monday as they open up their programme before further pool meetings with co-hosts Ukraine and Sweden and Blanc says they are showing signs of forming a dangerous unit.

On Benzema and Ribery's linking up well together on Tuesday's evidence he told reporters: "Ribery and Benzema have enormous potential and they have shown that with their clubs - though they still have to fulfil it with France.

"Collectively, we are moving forward (but) the moment of truth comes on June 11," he concluded.