Germany made it three wins from three under Hansi Flick and tightened their grip on top spot in World Cup qualifying Group J with a routine 4-0 victory over Iceland.

After putting eight unanswered goals past Liechtenstein and Armenia in their opening two games under Flick, Die Mannschaft kept up their positive start in Reykjavik.

Serge Gnabry's tap-in and Antonio Rudiger's header had Germany two goals ahead inside 24 minutes and Leroy Sane killed off the contest early in the second half.

Germany passed up a number of further opportunities before Timo Werner added a late fourth to seal a win that moves his side four points clear of second-place Armenia, who were held to a surprise 1-1 draw by Liechtenstein earlier on Wednesday.

Gnabry opened the scoring after six minutes in the 6-0 win over Armenia three days ago and needed just four minutes to get off the mark against Iceland at Laugardalsvollur.

Joshua Kimmich played in Sane with a pass on the spin and the Bayern Munich winger laid the ball on a plate for club-mate Gnabry to convert from close range.

That goal was allowed to stand after a VAR check for offside and the visitors had a second when Rudiger powerfully headed Kimmich's delivery away from Hannes Halldorsson.

Germany were then given a scare when, moments after Werner missed a one-on-one, Johann Berg Gudmundsson struck the post and Albert Gudmundsson's follow-up was ruled out for offside.

Kai Havertz, brought on for Gnabry at half-time, was next to miss a glorious chance as he slotted wide with just Halldorsson to beat, but Sane thumped a third into the rood of the net to seal the points.

After Leon Goretzka had a goal ruled out for offside it was left to Werner to complete the rout, the Chelsea attacker's shot trickling over the line as he made amends for an earlier horror miss from six yards out.

What does it mean? Flick's flying start continues

As far as starts to international coaching go, three wins from three with 12 goals scored and none conceded is just about as good as it gets for Flick.

The calibre of opponent may not have been all that daunting, but Germany have done what was asked of them to overtake Armenia and open up a healthy lead at the top.

Tougher tests lie ahead for Flick, but the transition from the disappointing end to Joachim Low's long tenure has been seamless and Germany's place in Qatar is almost assured.

Kimmich runs the show

Gnabry, Rudiger, Sane and Werner will receive the plaudits for getting their names on the scoresheet, though Kimmich was once again superb for Germany in central midfield.

He was pivotal in the opening goal with his vision, set up the second and played more key passes (four) than any other player on the field.

Wasteful Werner

Werner undoubtedly has his qualities, but he is arguably now better known for his collection of horror misses than world-class goals.

The Chelsea man did manage to score his 19th international goal on his 45th cap, but only after failing to convert a one-on-one and what was effectively an open goal from his four shots in total.

What's next?

Germany host Romania in their next Group J match on October 8, the same day that that Iceland welcome Armenia to Laugardalsvollur.