Serious financial questions are being raised over TransLink's repeatedly delayed Compass Card system as Cubic Transportation, the U.S. company responsible for supplying the system, comes off a poor fourth quarter facing several class action lawsuits.

The Compass card system was supposed to save millions by installing fare gates and stopping fare evaders, but Burnaby Mayor Derek Corrigan claims it may instead be costing millions.

Corrigan says Compass card cost overruns may have prompted TransLink to go to the Metro Vancouver mayors asking for $5.5 million more in public money from the federal gas tax.

The Compass card system is a year behind schedule with no firm start date in sight. (CBC)

In its annual report, Cubic Transportation admits the 2013 fiscal year was "challenging" and "very poor." In part because of problems installing the Vancouver system, the report states, "operating margins declined due to an increase in estimated costs."

In Chicago, Cubic's Ventra card system has also had serious problems and is the subject of several class action lawsuits.

Meanwhile, the Compass card system in Vancouver is a year behind schedule with no firm start date in sight.

Corrigan says it's a concern.

"Are there cost overruns? Are there other monies going in from Translink? We don't see what parts of their budget may be used to assist in this area."

TransLink not worried

Mike Madill, TransLink's vice president in charge of Compass, says he's not sure what Corrigan is talking about.

Mike Madill, Translink's vice president in charge of Compass, says it's unfair to compare Cubic Transportation's U.S. operation with the Compass card system. He says they're two different systems and Translink is deliberately phasing in Compass slowly to give riders a chance to adjust to the new system. (CBC)

"I don't want to speculate on what that [financial] request was, but I don't think it had anything to do with the Compass card project's cost changing."

Critics say TransLink has spent too much money to abandon Compass now, but serious questions are being raised.

"Cubic appears to be in financial trouble, says Corrigan, "and we're likely to be left holding the bag."

Madiill says that's speculation.

"I wouldn't want to speculate about Cubic's future," he told CBC News. "But we have protections in our contracts to guard against those kinds of things."