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Do modified exhausts pass the NCT?
Will a VW Golf with a full straight-through exhaust system pass an NCT?
Sean O'Neill (Kildare )Jan 2026 Filed under: NCT
Expert answer
Hi Sean,
It would be very unlikely to pass, though you never know, as the testing standards across the country are variable. It could fail on a number of things, including excessive loudness, measured emissions and the fact it's a modified exhaust system.
Shane O' Donoghue - Complete Car Advisor