The Electric-Vehicle Cheating Scandal

When carmakers test gasoline-powered vehicles for compliance with the Transportation Department’s fuel-efficiency rules, they must use real values measured in a laboratory. By contrast, under an Energy Department rule, carmakers can arbitrarily multiply the efficiency of electric cars by 6.67. This means that although a 2022
Tesla Model Y tests at the equivalent of about 65 miles per gallon in a laboratory (roughly the same as a hybrid), it is counted as having an absurdly high compliance value of 430 mpg. That number has no basis in reality or law.



For exaggerating electric-car efficiency, the government rewards carmakers with compliance credits they can trade for cash. Economists estimate these credits could be worth billions: a vast cross-subsidy invented by bureaucrats and paid for by every person who buys a new gasoline-powered car.

Until recently, this subsidy was a Washington secret. Carmakers and regulators liked it that way. Regulators could announce what sounded like stringent targets, and carmakers would nod along, knowing they could comply by making electric cars with arbitrarily boosted compliance values. Consumers would unknowingly foot the bill.

The secret is out. After environmental groups pointed out the illegality of this charade, the Energy Department proposed eliminating the 6.67 multiplier for electric cars, recognizing that the number “lacks legal support” and has “no basis.”

Carmakers have panicked and asked the Biden administration to delay any return to legal or engineering reality. That is understandable. Without the multiplier, the Transportation Department’s proposed rules are completely unattainable. But workable rules don’t require government-created cheat codes. Carmakers should confront that problem head on.

Mr. Buschbacher is a partner at the law firm Boyden Gray PLLC. He served in the Justice Department’s Environment Division (2020-21). Mr. Conde is counsel at Boyden Gray PLLC.