There's nothing like summer in Toronto. It's a time when things really heat up all over town, especially on TTC subway cars.

If you took Line 2 this past summer, you probably got into a sweltering car and schvitzed your way across the city. Things got so bad that Mayor John Tory even accepted a rider's challenge and rode the length of the line just to experience what it was like for daily commuters.

According to a new TTC report, there was a dip in customer satisfaction during the third quarter of the year, or between July and September. Customer satisfaction dropped to 70 per cent, down 10 per cent from the previous quarter.

"The significant decrease in Q3 can be linked predominantly to the ‘hot subway car’ issue that affected around 20 per cent of subway cars this summer on Line 2. Customer satisfaction on Line 2 fell significantly," reads the report.

As Metro writes, the TTC is working to fix these AC-related problems so that Line 2 isn't so sweltering next summer.