Toyota’s heavy-duty trucking unit was fined $1.6 billion on Wednesday over fraudulent emissions testing and other violations.

U.S. officials announced a $1.6 billion deal with Toyota's Hino Motors unit to settle charges it deceived regulators about the amount of emissions spewed by its diesel engines.

Hino Motors will plead guilty to submitting false emissions data to regulators for more than 100,000 heavy-duty trucks. The company will pay an array of fines, and fix some affected vehicles for free.

A Toyota subsidiary has agreed to pay more than $1.6 billion and plead guilty for violations related to the submission of false and fraudulent engine emission testing and fuel consumption data to regu

Hino Motors, a Toyota subsidiary, will plead guilty to conspiracy charges and pay penalties for deceiving regulators about its diesel engines, the E.P.A. said.

Toyota subsidiary Hino Motors has agreed to pay $1.6bn (£1.3bn) and plead guilty to deceiving US regulators about the amount of emissions produced by its diesel engines, according to the firm and US government agencies.

Toyota Motor unit Hino Motors has agreed to a $1.6 billion settlement with US agencies and will plead guilty over excess diesel engine emissions in more than 105,000 US vehicles, the company and US government said on Wednesday.