New car sales in the U.S. could rise more than 30 percent this month.

Analysts are calling for more than a 30 percent increase in May auto sales. That boom can be attributed to falling gas prices rekindling the truck and SUV market.

According to the latest estimate from TrueCar.com, May car sales in the U.S. will end up 32 percent higher than the same month last year. That would also mark an 18.3 percent improvement over April's final tally.

"Pent-up demand continues to fuel auto sales at a steady and sustainable level in May," Jesse Toprak, vice president of market intelligence for TrueCar.com, told The Detroit News. "All major manufacturers will see double-digit growth this month."

Barclays Capital has released a similar forecast, predicting May says to increase to 1.4 million units. That pace would keep 2012 on track for annual sales of about 14.5 million units.

Barclays says "moderating gas prices" are "fueling increased light truck purchases."

Although all major automakers should see a healthy sales bump for the month, Barclays expects the Japanese automakers to see the biggest increases. Toyota and Honda have finally recovered from last year's earthquake and tsunami, which should result in much improved sales.