The Mazda6 could finally get a diesel engine option in the United States like the company has been promising since at least 2012. Autoblog recently discovered a California Air Resources Board document certifying the Mazda6 with the same 2.2-liter turbocharged four-cylinder diesel engine already available with the CX-5. It seems very likely that this is indeed confirmation the SkyActiv-D engine will make its way into the 6 as the certification is specifically for that model.

The certification mentions the 2.2-liter turbo-four diesel being mated to a six-speed automatic transmission but doesn’t say whether the car would be front-wheel drive or all-wheel drive. In all likelihood, the engine will not undergo any changes from when it’s found beneath the hood of the CX-5 and continue to push out 168 hp and 393 Nm)of torque.

It’s difficult to say when we should expect to see the Mazda6 diesel hit the market but it will likely land as a 2021 model meaning it should be unveiled before the middle of this year. The diesel engine will most likely only be available in the range-topping Mazda6 Signature trim that starts at US$ 36,345 with the standard 2.0-liter turbocharged four-cylinder petrol engine. It’s reasonable to assume that, like the CX-5 diesel, the oil-burning version of the Mazda6 will carry a similar premium of about US$ 4,000, placing the model’s starting price at around the US$ 40,000 mark.