Overall retail sales grew by 1.3% last month compared with March, according to the US Commerce Department - the strongest gain since March 2015.
Car sales climbed by 3.2%, a sharp reversal from the 3.2% fall recorded in the previous month.
March’s total retail sales were better than previously reported, falling by 0.3% not 0.4%.
When cars, petrol, building materials and food services are stripped out "core retail sales" rose by 0.9% in April. Analysts had forecast a 0.3% gain.
"The numbers came in much stronger than we expected," said Peter Cardillo chief market economist at First Standard Financial.
"That will help alleviate the market’s concerns over retail. The number also puts the rate hike back on the table," he added.
Sales grew in most retail sectors, except building materials and garden equipment.
According to Neil Saunders, chief executive of Conlumino retail growth is slowing, amid a "darkening" economic outlook. However he says the slowdown is not dramatic and it does not affect all sectors equally.
"Consumers are now more cautious about spending than they were at the start of the year. This is something not helped by the increase in the cost of gas which, although still lower than last year, has risen consistently for the past few months. Gas now takes a larger share of retail spend than at any time in the past 6 months," he said.
"Ultimately, this means that while Americans are still spending they are doing so more selectively: choosing which products to buy and which retailers to visit and paying much more attention to things like price and value for money.
"This week we have heard from those retailers which have lost out because their strategies, positioning, or appeal is wrong. While their fortunes reflect a more negative mood, they are not necessarily representative of retail as a whole."