Major Driving Test Faults: Complete DVSA Category List 2026

#What are the DVSA driving test fault categories?

The examiner records every fault on the DL25 marking sheet, which lists 25 named categories. Each one covers a single driving skill or behaviour: junction observation, mirror use, use of speed, positioning, pedestrian crossings, and so on. For any category the examiner can mark a driving fault (minor, written as a tick), a serious fault (S), or a dangerous fault (D). The test outcome depends on which symbols appear, not how many categories are touched. A candidate can have one minor in ten different categories and pass. A single S in any one category is an instant fail.

Not every category carries the same risk. DVSA's published data from 2024/25 show that junctions and mirrors together account for more than a third of all fault marks. Understanding which categories generate serious faults most often is the most direct preparation a learner can do.

#Which categories generate the most serious faults?

The chart below shows the relative rate at which each main category produces a serious or dangerous fault mark, indexed to the most risky category. A bar at 50 means that category generates roughly half as many serious-level marks as junctions (observation).

#Junctions (observation): the highest-risk category

The junctions category covers every decision made at a give-way line, stop line, T-junction, crossroads, or roundabout entrance. The DVSA splits it into four sub-categories: observation (did you look properly?), turning right (road position and priority), turning left (positioning and clearance), and cutting corners (taking the straight-line path through a right turn instead of going around the crown). Observation is by far the most recorded sub-category across all four.

• Minor (junctions, observation): Emerging after a single look when two looks were needed, but the road was genuinely clear. Hesitating longer than necessary at a clear give-way with no oncoming traffic.
• Serious (junctions, observation): Emerging at a T-junction without checking adequately for an oncoming vehicle, which has to brake or reduce speed because of you.
• Dangerous (junctions, observation): Pulling out directly into the path of an oncoming vehicle so that the examiner applies the dual brake to prevent a collision.
• Serious (junctions, turning right): Cutting the corner on a right turn, taking a straight-line path and crossing the centre line into the oncoming lane.
• Serious (junctions, turning left): Swinging wide to the right before the turn to gain space, causing a vehicle behind to brake or swerve.

#Mirrors (change direction and signalling)

The mirrors category is split between "change direction" (any time you move the car sideways, speed up significantly, or slow down to turn) and "signalling" (did you check the mirror before you indicated). It is the second most marked category in DVSA data. The practical rule: every mirror check must happen before the signal, and every signal must happen before the manoeuvre. Any departure from that order is a mark in this category.

• Minor (mirrors, change direction): Checking the centre rear-view mirror but not the relevant side mirror before a lane change. Checking mirrors but doing so very late in the approach.
• Serious (mirrors, change direction): Not checking any mirror before moving out to overtake a parked car, causing a following driver to brake.
• Minor (mirrors, signalling): Indicating before completing the mirror check. Three or four of these in the same test can be upgraded to a serious fault under the habitual rule.

#Moving off: safely and under control

Moving off covers every time the car starts from a stationary position: at the start of the test, at traffic lights, after a manoeuvre, and on a hill. The "safely" sub-category means checking all mirrors and the appropriate blind spot before moving. The "control" sub-category covers the mechanical quality of the move: not rolling back on a slope, not stalling on a busy junction, not lurching from a harsh clutch release.

• Minor (moving off, safely): Checking mirrors but omitting the left-hand blind-spot glance before moving from the kerb on a quiet road.
• Serious (moving off, safely): Moving off from a parking space without checking and causing a cyclist to swerve around the car.
• Minor (moving off, control): A brief stall at a clear give-way with no effect on surrounding traffic.
• Serious (moving off, control): Stalling on a mini-roundabout and blocking a vehicle already committed to the junction.

#Use of speed and maintaining progress

These two categories sit at opposite ends of the same problem. "Use of speed" marks a candidate who drives too fast for the conditions, even if the posted limit is not exceeded. "Maintaining progress" marks a candidate who drives too slowly, hesitates excessively, or holds up traffic without a valid reason. Both can produce serious faults, which is why experienced candidates aim to drive at the confident middle: at the posted limit in normal conditions, slowing only when a genuine hazard or junction demands it.

• Minor (use of speed): Briefly touching 33 mph in a 30 mph zone before correcting. Approaching a roundabout entrance faster than the sight lines warrant, but stopping safely.
• Serious (use of speed): Consistently driving 5 to 8 mph over the posted limit on a busy road. Approaching a pedestrian crossing too fast to stop within the stopping distance.
• Minor (maintaining progress): Hesitating one or two seconds at a clear junction before emerging. Driving at 28 mph on an open 30 mph road.
• Serious (maintaining progress): Sitting at a clear give-way and refusing to emerge while the examiner waits. Driving at 20 mph in a 40 mph zone for an extended period with no apparent reason.

#Response to signs and signals

This category covers every fixed or variable sign (speed limit, give-way, stop, no entry, one-way arrow, lane designation), road markings (stop lines, box junctions, solid white centre lines), traffic lights, and responses to signals from other road users. Missing a speed limit sign and briefly exceeding it before correcting is usually a minor. Crossing a stop line without a full stop is serious. Going through a red light is dangerous.

• Minor (response to signs): Slowing slightly late for a new 30 mph zone but correcting within a short distance before any traffic is affected.
• Serious (response to signs): Crossing a stop line without bringing the car fully to rest. Entering a yellow box junction when the exit is clearly blocked.
• Dangerous (response to signs): Driving through a red traffic light into moving cross traffic.
• Serious (road markings): Straddling the centre line on a bend and affecting oncoming traffic.

#Pedestrian crossings

Pedestrian crossings are one of the clearest fail triggers in DVSA data because the rule is binary: if someone is on the crossing, you give way. Any pedestrian already using a Zebra or Puffin crossing who has to stop, step back, or alter their path because of the car's approach is a serious or dangerous fault. The key variable is approach speed: arriving too fast means there is no margin for the examiner to see a controlled response.

• Minor (pedestrian crossings): Approaching a Zebra crossing slightly briskly but stopping cleanly before the give-way line with no pedestrian present.
• Serious (pedestrian crossings): Failing to give way to a pedestrian who has stepped onto the crossing and who has to wait or adjust their pace.
• Dangerous (pedestrian crossings): Crossing the Zebra markings while a pedestrian is already using the crossing.

#Positioning and lane discipline

The positioning category covers where the car sits within the lane during normal driving and how the candidate handles multi-lane situations. Riding the centre of a country lane with no oncoming traffic is a minor. Drifting across the centre line when a vehicle is approaching is serious. Choosing the wrong lane at a roundabout and blocking a vehicle in the correct lane can be serious, as can failing to keep to the left on a dual carriageway when it is practical to do so.

#Manoeuvres: reverse, bay park and parallel park

Manoeuvre categories record control and observation separately. The control sub-category covers accuracy and physical coordination: did the car go where intended, with appropriate speed? The observation sub-category covers whether every relevant blind spot was checked at the right moment during the manoeuvre. Most candidates who fail on manoeuvres do so on the observation sub-category, not on the final physical position of the car.

• Minor (reverse, control): Finishing a parallel park 40cm from the kerb instead of within 30cm. A single small steering correction during a bay park.
• Serious (reverse, control): Mounting the kerb with a tyre during a parallel park or losing control of the vehicle on a hill start.
• Minor (reverse, observation): Forgetting the left-hand blind-spot check once during a bay park manoeuvre when no vehicle or pedestrian is present.
• Serious (reverse, observation): Reversing without checking and causing a pedestrian or cyclist to stop and wait.

#When do minor faults become a serious fault?

Three or four minor faults in the same category during one test can be upgraded to a single serious fault under the habitual rule. The examiner exercises judgement: there is no fixed count at which the upgrade must trigger, but three consecutive mirror-check minors in one session is the most common pattern that prompts it. A learner with five separate mirror minors, all individually harmless, can receive a serious for "habitual" mirror fault at the debrief. Drilling consistent habits, not just avoiding individual mistakes, is what the pass record reflects.

#How the examiner marks a fault in real time

For a deeper look at the three fault tiers and what each grade officially means, see the driving test faults explained guide. For the frequency ranking of which categories appear most often across all tests, the most common driving test faults guide covers the DVSA 2024/25 distribution in detail. The serious vs minor faults explained guide covers where the line sits between the two grades with additional worked examples. For the test day process itself, the driving test day checklist and the show me tell me questions guide cover the categories that come up before the on-road section starts.

#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)
• The Highway Code (gov.uk)
• Driving eyesight rules (gov.uk)
• Open Government Licence v3.0 (nationalarchives.gov.uk)