The drink-drive limit should be quartered, but only after more strict enforcement of the current 80mg/100ml maximum, according to the cross-party Transport Select Committee.
The committees verdict was published to coincide with the start of the UKs Christmas anti-drink drive advertising campaign.
It says public support for a lower limit needs to be won, and it believes stricter enforcement of the current limit will help to prepare motorists for a big drop.
While there has been some pressure for the UK to immediately fall in line with the 50mg/100ml limit used across most of Europe, the committee does not recommend this.
Instead, the MPs suggest an even lower, near zero-tolerance limit of 20mg/100ml. This is the same as the limit used in Sweden and allows only for the use of some medications that contain small amounts of alcohol.