Detroit Three automakers are set to lose market share to Asian rivals this week. Experts said soaring gasoline prices pushed buyers toward fuel-efficient models. General Motors, Ford, and Stellantis could see their combined share fall to 36%. Meanwhile, hybrid-heavy brands like Toyota and Honda now account for over half of sales.

Oct 1 (Reuters) - The Detroit Three are expected to lose ground to Asian rivals when they report third-quarter US sales this week, according to experts, as soaring gasoline ​prices due to the Iran war push buyers towards hybrids and ‌more fuel-efficient models.

General Motors, Ford Motor and Stellantis could see their combined market share dip to around 36% in the third quarter, while hybrid-heavy Asian brands including Toyota and Honda ​are expected to account for more than half of new vehicle sales ​in the period, industry research firm Cox Automotive said.

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Hybrids have emerged ⁠as a top choice as consumers look to avoid high gasoline prices, which ​hit a national average of $4.43 a gallon in September, according to AAA, compared ​with $3.20 a year earlier.

While borrowing costs have declined, this has done ​little to ease affordability ​pressures, said research ⁠firm JD Power, as higher new vehicle prices and lower trade-in values push monthly payments higher. The average transaction price ​for a new vehicle rose 1.9% to $50,089 in August from ​a year ⁠earlier, according to Cox.

"Higher-income buyers who aren't as squeezed by borrowing costs are likely doing the heavy lifting right now, while budget-conscious households are forced to hang onto ⁠older ​cars much longer," said Jessica Caldwell, head of ​insights at Edmunds.

Cox estimates overall US sales in the quarter at about 4.1 million units, down about ​1% from a year earlier.

Reporting by Nathan Gomes in Bengaluru; Editing by Jonathan Ananda