Environmental Protection Agency chief Scott Pruitt, who’s under investigation for ethical failures over his extravagant spending of taxpayer money, upgraded his official vehicle last year to one with bullet-resistant seat covers, a report on Tuesday said.

Pruitt rejected the Chevy Tahoe other EPA directors have used for a larger, newer and more high-end Chevy Suburban with a leather interior, bucket seats in the second row and WiFi and GPS navigation, the Washington Post reported, citing federal records and interviews with agency officials.

He was issued the Tahoe in February but switched out for the Suburban in June, paying an extra $300 a month for the SUV with the additional upgrades.

A former EPA official told the newspaper that Pruitt wanted a larger vehicle because it’s similar to those used by other Cabinet members.

The lease is $839 a month, the report said.

Then, the head of Pruitt’s security detail, Pasquale Perrotta, approved the addition of the Kevlar-like seat covers that ran an extra hundreds of dollars.

“Security decisions are made by EPA’s Protective Service Detail and are similar to security protocol across the federal government,” EPA spokesman Jahan Wilcox said in a statement.

Pruitt has taken heat for beefing up his security detail so they’re with him 24/7 and for flying first-class instead of coach to avoid an “unprecedented” number of threats against him.

His office also awarded another contract in March to a Connecticut leasing company for a 2018 Suburban with four-wheel drive, a sunroof and GPS navigation, the report said, citing federal records.

But the leasing company said it appears the EPA hasn’t picked up the vehicle.

Meanwhile, the 2014 Chevy Tahoe used by Pruitt’s EPA predecessor, Gina McCarthy, is still at the agency’s headquarters. The agency renewed its $9,180 monthly lease in February 2017.

An EPA official told the newspaper the agency was looking into the leases.

Two congressional panels are probing Pruitt’s first-class travel.

The Government Accountability Office on Monday said he violated federal spending law by installing a $43,000 soundproof telephone booth in his office.