England coach Stuart Lancaster has admitted that his side will have to make a massive improvement on their performance against Argentina if they are to compete with New Zealand.
England have won both their November internationals so far, finishing strongly against Australia before making an excellent start against Argentina, but on both occasions their performance fluctuated significantly.
A below-par second half against the Pumas will have the England staff worried as they know a similar performance will leave them with no chance of a repeat of last year's upset win over the All Blacks.
"We need to work on our accuracy to get that 80-minute performance because to beat the best team in the world, which is what we're facing, we need to be at that level," Lancaster told BBC Radio 5 Live's Sportsweek programme.
"We need to go up a couple of notches, definitely. We've had a good look at New Zealand during the Rugby Championship.
"If you slip an inch against them, they take it, so we'll have to be at our best."
"There was a lot of intent and accuracy in the first half, but Argentina upped their game and put us under pressure, while we became impatient," added Lancaster.
"We tried to force the game instead of continuing to build the score.
"If you said before the game we'd win 31-12, when I look at some of their performances in the Rugby Championship then I would have taken that
"When you have a young side of 200 or so caps (287 caps), sometimes you need to go through these experiences to learn
"We've certainly learnt a lot on the previous week against Australia.
"We'll have learnt more from this game and hopefully it will stand us in good stead against New Zealand."