He did that regularly for a discounted student fare of 45c, and was annoyed that on the evening in question, a Hop card machine reader on the bus recorded a charge of $2.70c as he got off.
"I made a complaint to the driver straight away but he refused to do anything," Mr Hsu told the Herald.
Later, when he logged on to his online Hop card account, he found he had been charged $2.70c for a trip in the opposite direction and from the extremity of the 267 bus route.
"It shows that I got on the bus at 19.23 [7.23pm] in The Avenue, opposite Oriana Ave [in Lynfield] and got off the bus on 19.29 [7.29pm] St James Queen St," he said.
"For everyone's common sense, it is impossible that the bus can drive from Lynfield to the city in six minutes."
Mr Hsu said that when he phoned the Hop call centre, the only response was that what happened to him was "not possible".
Although $2.70c was not a large sum, many of his friends had told him of problems using Hop cards, and the incident had shaken his confidence in the system.
Auckland Transport spokeswoman Sharon Hunter last night blamed the incident on a mistake by the bus driver, who she said "punched in the return journey rather than the out journey".
But she could not explain how the incorrect journey could have been recorded as having taken only six minutes.
She said Mr Hsu would be reimbursed.
Asked about the robustness of the Hop system, she said it was rare for such errors to occur.
UN-FARE
* Passenger was charged $2.70 for a trip from Lynfield to Queen St.
* The trip he took was from Queen St to Wakefield St.
* This was a trip he regularly made which cost 45c.