How often does this part fail a real inspection, by car age?

In 2,102,125 New Jersey initial inspections in 2025, 14.3% of cars aged 16+ years failed the emissions test against 2.8% of cars under 3 years, about 5 times as often (record counts, not a sample).

<32.8%

3-42.6%

5-62.8%

7-94.1%

10-127.5%

13-159.7%

16+14.3%

What it shows: 16+ is the largest at 14.3%, followed by <3 at 2.8%; the smallest shown is 3-4 at 2.6%.

Source: New Jersey Motor Vehicle Commission, Vehicle Inspection Data · file downloaded 2026-10