An Ashley Young strike secured victory for the Three Lions but it was another disappointing display in front of the Wembley crowd which the manager acknowledged afterwards
A first-half strike from Ashley Young means England go to Montenegro next month needing only a point to secure their place for the tournament next summer, but they were fortunate that Wales striker Robert Earnshaw spooned a shot over the bar with the goal gaping just 10 minutes from time.
The win was England's first competitive victory at Wembley in three fixtures following draws against Switzerland and Montenegro.
And despite saying the team's performance was not good enough for his liking, Capello said sometimes grinding out a result was more important than the manner in which it was earned.
"We suffered a lot in the last 15 minutes. The first half we did not start well and after we played not too bad. We scored a goal. The second half for 20-25 minutes we played well but we suffered and they [Wales] got plenty of chances to score a goal," he told reporters after the match.
"We create some problems on the counter-attack but not too much.
"Yeah I know the style that I like the players to play during the game but today sometimes because the opponents press a lot only two players were alone, the two centre-backs.
"For that reason the ball moved too slowly but sometimes the result is most important."
Capello has spoken in the past about a fear factor England have when playing in front of their home fans and he alluded to it again when asked if the national side had to improve their performance in the future.
"We need to improve, we are playing better away than at Wembley. Also, we need to recover some players that are out at the moment," he said.
"In the future maybe new players will be fit and okay to play for the senior team."
Wales were dominant at the end of the match, as Capello himself admitted, but he refuted any suggestion that replacing Frank Lampard for Scott Parker was a defensive tactic to hold out for the win.
"No it wasn’t a defensive tactic, it was for a different balance on the pitch," he added.
"Because I put Milner forward to press more and receive the ball. We played one midfielder in front of the back four and two midfielders forward and changed the position because it was better to support [Wayne] Rooney.