LONDON, May 14 (Reuters) - Northwest European gasoline refinery margins held steady at $31.82 a barrel on Thursday, as lower oil prices helped offset the impact of low inventories.

• About 32,000 metric tons of E5 gasoline barges traded in the Argus window as BP and Equinor sold to TotalEnergies.

• An additional 12,000 tons of E10 gasoline barges changed hands, with Trafigura, Shell and Equinor selling to BP, Exxon and Varo.

• The U.S. House passed legislation late on Wednesday that would permit fuel retailers to offer gasoline containing 15% ethanol year-round.

• Brazil's government said it will provide a direct subsidy to gasoline producers and importers, and later to diesel, after a proposal to cut federal fuel taxes stalled in Congress.

• Meanwhile, EU-27 and UK exports of gasoline and blending components stood at 473,000 bpd in May, compared with 945,000 bpd in April, data from Kpler showed.