Most Common UK Driving Test Faults: DVSA 2024/25 Data

#Which fault categories appear most often on UK driving tests?

The DVSA records every fault mark given during every practical car test in Great Britain. The resulting dataset from 2024/25, covering approximately 1.84 million tests, shows a consistent pattern: a handful of categories produce the overwhelming majority of marks. The top five categories alone account for roughly half of all fault marks recorded during that period. Most of them involve junctions and mirrors, two areas that learners often consider well-practised but rarely nail under test conditions.

The distinction between a minor fault mark in one of these categories and a serious fault in the same category can come down to a single check you did or did not make. A candidate who looks but does not look early enough picks up a minor. A candidate who pulls out on a vehicle still approaching picks up a serious, which ends the test. That is why knowing which categories to focus on matters: these are the areas where a small lapse in habit creates the highest risk.

#The top 10 most recorded fault categories (DVSA 2024/25)

The chart below shows the approximate relative frequency of fault marks across the ten most recorded categories in 2024/25. The index is normalised to the most common category (junctions, observation) at 100. A score of 50 means that category produced roughly half as many total fault marks as the top category. These figures cover both minor and serious fault marks combined.

#Why junctions (observation) is the number one fault every year

Junctions require the most demanding coordination of the test: slow the car, select the correct gear, position accurately, identify the give-way or stop rule, observe right-left-right, judge the speed and distance of approaching vehicles, and then move off smoothly. Any break in that chain produces a fault. The observation part specifically means the candidate looked but not effectively, looked at the wrong moment, or moved before the observation was complete. Examiners record it even when no other vehicle was actually close, because ineffective observation is the habit that causes real accidents.

The fix is deliberate practice at junctions, not just driving through them. Ask your instructor to call out "observation?" every time you reach a give-way line. You should be pausing long enough to make a full right-left-right sweep, not just a glance. If you emerge from a junction and your instructor had to intervene in your perception of a vehicle, you have just demonstrated the exact habit that fails tests. Most candidates need 20 to 30 deliberate junction approaches before the habit becomes automatic.

#Mirror faults: the second most recorded category

Two mirror fault sub-categories sit in the top four: mirrors before changing direction and mirrors before signalling. Together they contribute almost as many fault marks as junctions observation. The Highway Code is clear on the mirror-signal-manoeuvre routine, and DVSA examiners mark it consistently. The issue is not that candidates do not know to use mirrors. The issue is that under test stress they skip or rush the mirror check, or they check the mirror after they have already started to indicate.

• Check the interior mirror before every signal, direction change, and speed reduction
• Check the relevant door mirror before signalling for a lane change or turn
• Make the check visible: move your eyes clearly to the mirror, not a glance the examiner might miss
• On the MSM routine, the mirror check should happen before the signal, not simultaneously
• After a manoeuvre, check mirrors again before resuming normal driving speed

#Moving off faults: the third pillar of test failures

Moving off safely covers several distinct problems. A stall on a hill or at traffic lights picks up a moving-off minor fault (more than one stall in a session can upgrade the pattern to a serious). Rolling back on a hill before you have matched clutch bite to handbrake release is a separate but related fault. Pulling away from a kerb without checking the blind spot over the right shoulder picks up an observation fault under moving off. Each of these is independently drillable. The single biggest cause is candidates who are not comfortable with clutch control at the point of departure, particularly on gradients, and try to move off too quickly to reduce examiner visibility of hesitation.

#Comparing how often faults turn serious

Not every fault mark ends the test. The question that matters strategically is which categories most frequently produce a serious fault when they do occur. The table below shows the four highest-volume categories and their approximate ratio of serious to minor fault marks, based on DVSA 2024/25 published data.

#How to use this data in your test preparation

The practical implication of the fault frequency data is straightforward: concentrate the majority of your deliberate practice on junctions and mirrors, because those are where you are most likely to pick up marks. That does not mean ignoring the rest of the fault categories, but it does mean that if you have limited lesson time left, spending it on junction approaches and MSM routine repetition gives the highest probability return.

#Do fault frequencies vary between test centres?

The top categories (junctions, mirrors, moving off) remain consistent across almost all UK test centres because the DVSA marking standard is national. What does change is the relative weighting of sub-categories. An inner-London centre with dense multi-lane junctions will record more junction observation faults per candidate than a rural Scottish centre where junctions are few and slow. A centre near a busy retail park will record more reverse-parking faults because bay parks appear more often on those routes. The passing driving test in London guide and passing driving test in Manchester guide cover the centre-specific patterns where the data is strong enough to call.

The easiest vs hardest test centres guide shows the national pass-rate spread: from around 33% at the toughest London centres to 68% at the highest-passing Scottish island centres. The fault-category mix is one of the structural reasons for that gap. At a high-density urban centre, junctions and pedestrian crossing faults appear more per test simply because the routes involve more of each. At a rural centre, fewer junctions means fewer junction-observation opportunities, and the candidate who would have picked up that fault may avoid it through route luck alone.

#What the least common faults tell you

Use of speed sits at the bottom of the top-10 list, but it deserves attention for a specific reason. Undue hesitation, the label given to driving significantly below the posted limit without good cause, is the most misunderstood fault on the test. Candidates who think cautious is safe are surprised to find that driving at 28 mph on a 40 mph road for an extended stretch collects a fault. The examiner is assessing whether you make progress appropriate to the conditions, not just whether you avoid exceeding the limit. A single slow stretch is usually a minor fault; a pattern of driving 25 to 30% below the limit can be treated as a habitual problem and upgraded.

#Sources and further reading

The figures, fees, and procedures referenced in this article are verifiable on the official gov.uk pages below. PassRates.uk is built on the Driver and Vehicle Standards Agency’s open data, published under the Open Government Licence.

• Driving test (gov.uk)
• If you fail your driving test (gov.uk)
• Change or cancel your driving test (gov.uk)
• Find a driving test centre (gov.uk)
• The Highway Code (gov.uk)
• Open Government Licence v3.0 (nationalarchives.gov.uk)