What common DVSA wording means in normal English.
Serious corrosion in a structural part of the body. If rigidity is significantly reduced it is more than cosmetic rust and normally needs proper metal repair.
Corrosion close to a structural mounting point can weaken the way the body or chassis carries loads and is treated seriously at MOT.
The disc surface has deteriorated. An advisory can become a failure as wear or damage progresses; pads and discs should be inspected together.
The left and right brakes on the same axle are producing meaningfully different braking effort. Causes can include calipers, cylinders, contamination or adjustment.
A brake-system warning needs investigation rather than simply clearing the lamp. Check fluid level and the underlying brake system.
The measured exhaust oxygen/emissions result is outside the permitted range. Causes can include air leaks, sensors, fuelling faults or catalyst problems.
Play has developed in an anti-roll-bar drop link joint. It can cause knocking and reduce suspension control.
Age, UV and deterioration can crack the rubber even when tread remains. The severity and location of damage determine whether replacement is required.
Metal fuel lines have visible corrosion. Because deterioration can eventually cause a leak, the pipes need close inspection and repair where necessary.
Oil is escaping but was not severe enough at the test to meet the higher failure threshold. Find the source and monitor the fluid level.
The plate is damaged or deteriorating but remains readable. Replace it before deterioration makes characters difficult to identify.
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