MICHIGAN, USA — Brisk demand for SUVs and pickup trucks — and five sunny weekends — pushed US auto sales to a nine-year high in May.

Chrysler, Nissan and Toyota all reported double-digit sales gains over last May. Even General Motors, battling bad publicity from a mishandled recall, surprised with a 13 per cent sales increase.

Ford’s sales rose a better-than-expected three per cent, while Hyundai’s were up four per cent. Of major automakers, only Volkswagen’s sales fell.

May is traditionally a strong month for the auto industry, as buyers spend their tax returns and think ahead to summer road trips. This year’s calendar, with five weekends, gave it an extra boost. Sales were particularly strong the last weekend of the month, automakers said.

Sales rose 11 per cent to just over 1.6 million in May. That was the highest monthly total since July 2005, according to Kelley Blue Book.

The surge helped erase doubts about the strength of the industry. January and February sales were weaker than expected as consumers spent more time shoveling snow than shopping.

“It’s the continued recovery in the summer selling season,” said Jeff Schuster, executive vice president of forecasting for LMC Automotive, an industry consulting firm. “Kind of everything aligning in the month of May.”

June should bring more of the same, said Karl Brauer, a senior analyst with Kelley Blue Book. May sales were driven by pent-up demand from the winter, he said, but the summer months will likely be strong because of other factors, including low interest rates, good lease deals and enticing new vehicles.

Automakers didn’t need big discounts to boost sales. Car buying site TrueCar.com estimated incentives were flat from last May and up 4 per cent from April to US$2,677 per vehicle. TrueCar said Hyundai, Kia, and Honda had the biggest increases in incentives in May. Chrysler, GM and Nissan offered fewer deals.