Sadiq Khan said the rating system would be a world first and could prevent “further heartbreak and tragedy”.
Only those vehicles getting at least three stars out of five would be allowed into the capital. Currently, there are 35,000 HGVs on a zero rating.
Nine cyclists and 66 pedestrians were killed in the capital last year, according to Transport for London.
HGVs were involved in 23% of pedestrian fatalities over the last two years and 58% of cyclist deaths, the mayor’s office said.
Lorries account for just 4% of all miles driven in the capital.
Should Mr Khan’s proposals be implemented, lorries with poor sightlines would be banned by January 2020.
But the mayor believes many lorries would be upgraded before the new restrictions come in.
“I’m not prepared to stand by and let dangerous lorries continue to cause further heartbreak and tragedy on London’s roads,” he said.
“The evidence is clear – HGVs have been directly involved in over half of cycling fatalities over the last two years, and we must take bold action to make our roads safer for both cyclists and pedestrians.
“I’m determined to ensure the most dangerous zero star-rated lorries are removed from our roads completely by 2020.”
The Road Haulage Association said the new rules were “unnecessary”.
Chief executive Richard Burnett said: “Demonising lorries, which keep the economy and shops going, is unfair.
“Lorries, including construction vehicles, play a vital part in the economic life of London. Without them, the capital’s businesses would grind to a standstill.
“We want to bring balance to the argument. We’re not convinced these measures are the solution.
“Improved visibility isn’t going to sort the problem alone.”
The London Cycling Campaign welcomed the new initiative.
Spokesman Tom Bogdanowicz said: “Pedestrians, cyclists and drivers and operators of HGVs all stand to gain if modern designs with minimal blind spots become the norm for on-street use.
“No-one wants fatalities and life-changing injuries to continue to happen.”
News Source SkyNews