Toyota totally missed the boat not importing their diesels into the US.
That's because the price of diesel compared to gasoline is relatively much higher in the USA. Toyota is a very rational company and made a good decision based on the local market.
Here is an example of two stations 4 miles apart, in Sarnia, ON and Port Huron USA.
Esso Sarnia: Regular 109.6/L Diesel 122.3/L
equal to USD: 3.11/gal 3.48/gal 12% higher
Speedy PT Huron: Regular 2.47/gal Diesel $2.95/gal 19.5% higher
The differential is even greater when you take low cost sellers like Costco:
Costco Roseville MI
Regular: 2.19/gal Diesel: 2.79/gal 33% higher
Diesel light duty vehicles do not sell well in the US except for trucks with towing applications because of the cost differential of fuel, negating any mileage advantage, and the higher initial cost of diesel engines. In Ontario, and most other provinces in Canada, tax differentials favor the economics of diesel.