If a tyre pressure monitor fails, it is an MoT fail?

I've heard differing opinions but I understand if a tyre pressure monitor fails, it is an MoT fail? Is this true, if so it makes no sense? Surely the MoT is concerned with vehicle safety? A failed tyre pressure sensor is hardly a safety issue, with the millions of cars not fitted with them cannot fail the MoT.

Asked on 28 October 2021 by Keith

Answered by Dan Powell
The tyre pressure monitoring system (TPMS) is a testable MoT item for vehicles first used on or after 1 January 2012 only. A car will fail the MoT if the warning light indicates a system malfunction and not simply low tyre pressure on one or more tyres.

Is it important? Yes, I'd argue so. A faulty TMPS system may result in the driver being unaware of a slow puncture which will increase wear and potentially impact the handling of the vehicle at higher speeds.
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