Around half of all UK driving test candidates fail their practical test every year. The reasons are consistent — the same fault categories appear at the top of the DVSA’s data year after year. Not because the test is designed to catch people out, but because certain habits develop during lessons that don’t get corrected before test day.
Understanding what the most common driving test faults actually are — and exactly how to address them — gives you a meaningful advantage going into your test. Here’s a breakdown of the faults that cost the most candidates their pass, and what to do about each one.
1. Poor Observation at Junctions
Junction observation is consistently the most common cause of serious faults in the UK driving test. It covers two related problems: not looking far enough before emerging at a junction, and misjudging gaps in traffic when turning right onto a busier road.
What this looks like in practice: approaching a give-way line, pulling forward slightly, then emerging without pausing long enough to genuinely assess the speed and distance of approaching vehicles. Eyes move, but they don’t process — and the examiner can see the difference.
How to correct it: Slow down well in advance of every junction so you arrive with time to observe properly. Look right, look left, look right again — and pause at each check rather than scanning continuously. Your head movement should be visible and deliberate. If the view is blocked, move forward slowly and look again before emerging, never assuming the road is clear. Practise this as a ritual until it feels natural, because it needs to be instinctive on test day.
2. Ineffective Mirror Use
Mirrors — change direction is one of the most frequently recorded minor faults in UK driving tests. It’s also one that many learners are genuinely unaware they have, because the omission doesn’t feel like anything went wrong — the manoeuvre still happened safely.
The mirror-signal-manoeuvre routine applies every time you change speed or direction: before signalling, before moving off, before changing lanes, before turning. Checking mirrors after signalling — or worse, skipping them entirely — is a fault that accumulates quickly across a 40-minute test.
How to correct it: Make mirror checks a visible, active habit rather than a passive glance that you’re not sure happened. Your head should move noticeably when you check your mirrors — both your instructor and the examiner need to be confident you’re actually looking. Ask your instructor specifically to monitor and feed back on your mirror use across a full lesson. If you don’t know whether you check enough, you probably don’t check enough.
3. Steering and Vehicle Control
Steering control — particularly through bends, roundabouts, and narrow streets — is a consistent source of faults, especially among learners who have moved through the early stages of training quickly without fully internalising smooth, proportionate inputs.
The most common version of this fault is over-correction: making a small error, then applying too much steering to correct it, then correcting that, creating a weaving path rather than a smooth one. It typically shows up when the learner is nervous or when a junction or obstacle appears quickly.
How to correct it: Smooth steering almost always comes from looking further ahead. The further ahead you look, the more time you have to make gentle, planned adjustments rather than last-second reactions. If your steering feels reactive rather than controlled, it’s usually a sign your eyes are too close to the car — not a problem with your hands. Practise consciously looking further down the road and let the steering follow naturally.
4. Positioning and Lane Discipline
Positioning faults appear in two distinct settings: on open roads, where learners drift too close to the centre line or hug the left edge unnecessarily; and at roundabouts and multi-lane junctions, where getting into the wrong lane or losing position through the exit is one of the most common sources of serious faults.
This fault is particularly relevant for learners in Glasgow, where roads like Great Western Road, the approach to Anniesland Cross, and the A803 near Bishopbriggs all require clear, committed lane positioning well before you reach the junction.
How to correct it: Identify which lane you need to be in early — not as you arrive at the junction, but well in advance. Commit to that position clearly and hold it through the manoeuvre. If you’re unsure about lane choice on a specific road or roundabout, raise it with your instructor and ask them to explain the logic — not just correct you in the moment. Understanding why helps you apply it independently.
5. Inappropriate Speed
Driving too fast and driving too slowly are both recorded faults. Exceeding the speed limit — even briefly — is a serious fault that results in an immediate test failure. But driving significantly below the limit without good reason generates faults for impeding traffic flow and failing to make normal progress.
Both tend to come from the same root cause: not enough time spent on faster roads during lessons, so candidates either over-caution or misjudge their speed when conditions demand more.
How to correct it: Know the default speed limits for every road type — 30mph in most built-up areas unless signed otherwise, 60mph on single carriageways, 70mph on dual carriageways and motorways. Check your speedometer regularly and actively, not just when you remember. Importantly, make sure your lessons include proper time on faster roads before test day — not just the local streets you feel comfortable on.
6. Hesitation and Failure to Make Progress
Excessive hesitation at junctions, roundabouts, and when emerging into traffic is one of the most frustrating fault types for learners to hear about, because it typically comes from trying to be safe — not from carelessness. Missing multiple genuine gaps to emerge, repeatedly stalling at a give-way situation, or waiting far longer than necessary at a junction all generate faults even when no danger was created.
The driving test assesses whether you can drive safely and independently under normal conditions — which includes making decisions at appropriate speed, not just executing manoeuvres when given unlimited time and space.
How to correct it: Work specifically on committing to decisions during your lessons. When a safe gap is available, take it — rather than waiting for a gap that feels even more comfortable. Ask your instructor to practice junction emergence with you specifically, giving feedback on whether you’re missing genuine opportunities. Confidence at junctions is a skill that develops through repetition; it doesn’t arrive on its own before test day.
7. Response to Traffic Lights
Traffic light faults range from moving away too slowly on green — causing unnecessary delay and sometimes getting caught on amber — to the more serious fault of proceeding when a light has changed to red and it was possible to stop safely. Edging forward on red is also regularly recorded as a minor fault.
How to correct it: Read traffic lights as early as possible — if a light has been green for a while as you approach at speed, anticipate the change and cover the brake rather than assuming it will hold. On green, move away promptly and confidently. On amber, apply the rule clearly: stop if it is safe to do so, proceed only if stopping would create a hazard. Hesitating mid-approach on amber is often worse than either decisive option.
8. Losing Routine During Independent Driving
The driving test is now fully independent driving throughout — approximately 40 minutes of following sat nav directions with no prompts or guidance from the examiner at any point. This is where some candidates make mistakes that wouldn’t appear in a normal instructed lesson. Without any guidance, the focus required to follow a sat nav can cause learners to drop their normal mirror checks, let their speed drift, or make sharper steering inputs when a direction comes late.
How to correct it: Practise independent driving regularly throughout your lessons — not just in the lesson immediately before your test. By test day, following a sat nav while maintaining your full driving routine should feel completely automatic, not like something you’re actively managing. A wrong turn during this section is not a fault. How you handle it — safely, calmly, and without compromising your driving — is what the examiner is watching.
9. Pedestrian Crossings
Failing to respond appropriately to pedestrian crossings is a consistent test fault — whether failing to stop for someone waiting to use a zebra crossing, or not reading a pelican crossing early enough to stop smoothly rather than braking sharply at the line. Under the current Highway Code, pedestrians have priority not only when they are crossing but when they are visibly waiting to cross at a junction.
How to correct it: Approach all crossings at a speed that allows a comfortable, controlled stop if needed. Scan ahead for pedestrians approaching a crossing — not just those already on it — and treat them as a developing hazard rather than waiting for them to step out before reacting. On busy Glasgow streets particularly, pedestrian activity is constant and needs to be factored into your driving at all times.
How MRA Driving Academy Addresses These Faults Before Test Day
Knowing the common faults is the first step — having an instructor who systematically identifies and corrects them during your lessons is what actually changes the outcome on test day.
At MRA Driving Academy, our DVSA-approved instructors give structured, specific feedback throughout every lesson — not general comments, but targeted correction of the exact fault patterns that show up most often in test results. Every weak area is addressed properly, not flagged and left to sort itself out.
With 90-minute lessons, there is time within a single session to identify a problem, work on it properly, and see genuine improvement before the lesson ends. That thoroughness, combined with deliberate test-route preparation across Glasgow and the West of Scotland, is why the vast majority of MRA learners pass their driving test first time. Instruction is available in English, Urdu, and Punjabi.
View our lesson prices or get in touch today to book with an instructor who knows exactly how to get you across the line.