Subaru Corp. blamed inspectors' excessive workloads as it revealed fresh cases of improper vehicle inspections in a final report on its data falsifications.

The automaker has newly found that inspectors failed to properly check brakes and speedometers during final inspections. The number of affected vehicles is difficult to know because the conduct came to light based on hearings with employees, it said Friday.

Subaru has already been grilled over a finding that its inspectors fabricated fuel and emissions data, which prompted the company to launch the in-house investigation.