Following word last month that the city would soon see additions to its much-delayed fleet of new streetcars, it now appears that delivery of the vehicles has hit yet another snag.

In March, Toronto Transit Commission spokesperson Brad Ross told CP24 that the agency expected to receive four new streetcars per month beginning in April.

In his monthly report released Thursday, however, TTC CEO Andy Byford seemed to put the brakes on that possibility.

“At the time of writing, I am unable to confirm a delivery schedule, but it is evident that Bombardier will not hit the four vehicles per month that we were promised as recently as last month,” he wrote.

Byford adds that he had spoken with the new CEO at Bombardier – the company contracted to deliver 204 streetcars by the end of 2019 – and expressed the TTC’s “complete frustration and dissatisfaction” with Bombardier’s delivery to date.

In an email sent to CP24 Thursday night, Byford said that he would likely have an update on the modified delivery schedule after meeting with the new Bombardier CEO "in the next few days."

There are currently 17 new streetcars in use along the city's Spadina and Harbourfront lines.

Ordered years ago, a total of 73 of the new low-floor streetcars were supposed to be in operation by the end of last year. A series of labour issues at Bombardier, however, resulted in a slew of revised dates for delivery. A number of vehicles that were delivered also had to be returned to the company because TTC inspectors found they didn't meet standards.

An earlier provided revised timeline promised 54 new cars in operation on city routes by the end of 2016.

“All the TTC can do is hold Bombardier to its promises,” Ross said in March. “We believe Bombardier’s schedule is achievable.”

The TTC has filed a claim for $51 million in liquidated damages for the delayed delivery.

“That cost is really to cover the cost of rebuilding our old streetcars,” Ross said last month.

The new streetcars are meant to replace the city’s fleet of aging vehicles that have been extended beyond their normal lifespan. The new streetcars also have the capacity to carry more passengers and are wheelchair accessible.

The city ordered the vehicles at a cost of $1.25 billion.