The single most common reason people fail the UK driving test is not making effective observations at junctions – pulling out or turning without properly looking. That sits at the top of the DVSA’s official list of the ten most common test faults, and it has done for years. The rest of the top ten is mostly the same family of mistakes: mirrors, moving off, road position and steering. None of them are dramatic. They are the everyday errors that quietly stack up, and the good news is that every one of them is fixable with the right practice.
Key facts
- Not making effective observations at junctions tops the DVSA’s official list of the most common driving test faults.
- Ineffective observation by a driver, rider or pedestrian was a factor in 47% of all collisions in Great Britain in 2023.
- Learners can collect up to 15 minor faults and still pass, but one serious or dangerous fault is an instant fail.
- A repeated minor fault can become a serious fault, which is the DVSA’s own wording for habitual mistakes.
- The DVSA top ten faults span junction observation, mirror use, moving off, positioning, signals, steering and speed.
The DVSA’s official top 10 reasons for failing
These are the ten faults the DVSA recorded most often on car driving tests in Great Britain between April 2024 and March 2025, published on GOV.UK and in the same order they rank them:
- Not making effective observations at junctions
- Not using mirrors correctly when changing direction
- Not moving off safely
- Incorrect positioning when turning right at junctions
- Not responding appropriately to traffic lights
- Not having proper control of the steering
- Not responding correctly to road markings
- Not responding correctly to traffic signs
- Poor positioning on the road during normal driving
- Not driving at a safe and reasonable speed
Look at that list as a whole before we break it down. Seven of the ten are about looking and positioning – where your eyes go and where your car sits. Only one or two are about handling the car mechanically. That tells you something important: the test is not really a test of whether you can operate the controls. By the time you sit it, you can. It is a test of awareness and judgement, and that is where it is won or lost. Here is each one, with how to keep it off your sheet.
1. Not making effective observations at junctions
This is the big one, year after year. It covers emerging from a junction without looking properly, looking too late to be any use, misjudging the speed of an approaching car and pulling out anyway, or entering a roundabout when something is coming from your right. The DVSA records all of it under the “Junctions – Observations” fault. It matters far beyond the test, too: ineffective observation by a driver, rider or pedestrian was a factor in 47% of all collisions in Great Britain in 2023, according to the official GOV.UK road safety data.
How to avoid it: slow down enough on the approach that you have time to actually look, not just glance. At every junction, look properly in both directions and make sure the gap is genuinely yours before you commit. The fault is usually not bad eyesight, it is going too fast to use it. Junctions are where most tests are decided, so they are worth more practice than anything else – we go deeper on the most common one in our guide to the T-junction.
2. Not using mirrors correctly when changing direction
Number two on the list is mirrors, specifically failing to check them before you change direction or speed. The classic versions are moving across to exit a multi-lane roundabout with no mirror or shoulder check, or starting to change lanes on a dual carriageway when there is already a car in the lane you want. The marking category is “Mirrors – Change direction.”
How to avoid it: lock in the mirror-signal-manoeuvre routine and never break the order. Mirrors come first, every single time, before you signal, change lane, turn or slow down. The examiner cannot see your eyes flick to the mirror, so make the check deliberate and early enough that you could still react to what you see in it. A mirror check the instant before you move is too late to count. Roundabout exits catch people most here, so it is worth getting the timing right – our guide to roundabout signalling breaks down exactly when the mirror and signal go on.
3. Not moving off safely
Pulling away without the right checks is third. That means moving off from the side of the road or from behind a parked car without a blind-spot check, or pulling away into the path of a vehicle that then has to slow for you. It is marked as “Moving off – Safety.”
How to avoid it: every time you move off, the routine is mirrors, then the blind spot over your shoulder, then go only if it is clear. The right-side blind spot is the one people forget, especially after a manoeuvre like the pull-up-on-the-right exercise. If you have been stationary for a while, treat moving off as a fresh decision and check again, do not assume the road is still as it was.
4. Incorrect positioning when turning right at junctions
Fourth is poor positioning on right turns – sitting too far to the left when you are waiting to turn right (which blocks traffic that could have passed you), or taking the wrong lane to turn right at a roundabout. The fault is “Junctions – Turning right.”
How to avoid it: when you are turning right, position the car as close to the centre of the road as is safe, so traffic behind can flow past on your left. Plan the turn early. Get into the correct lane in good time on the approach rather than drifting across at the last second, and on a roundabout commit to the right-hand lane when you intend to go right.
5. Not responding appropriately to traffic lights
Number five covers getting traffic lights wrong in either direction: edging through a red, but also sitting still at a clearly green light when the way ahead is open, or driving into a junction on green when there is no room to clear it. It is marked under “Response to signs – Traffic lights.” The wider stakes are real – there were 5,901 casualties in Great Britain in 2023 where failing to comply with a traffic sign or signal, or making an illegal turn, was a factor, per the official GOV.UK figures.
How to avoid it: read the lights early and keep reading them. On green, check the junction is actually clear before you go, and if you are turning right and waiting in the box, be ready to complete the turn when it is safe so you do not block the junction when the lights change. Do not creep into a junction you cannot get out of.
6. Not having proper control of the steering
Sixth is steering, which in practice means steering too late or not enough: understeering on a left turn so you swing wide, mounting the kerb on a bend, or that “swan neck” where you turn right late and end up on the wrong side of the new road. It is recorded as “Control – Steering.”
How to avoid it: match your steering to your speed. Most steering faults are really speed faults – you arrive at the turn too fast to place the car accurately. Slow down a touch more on the approach and you will have time to steer smoothly and follow the shape of the road rather than snatching at the wheel halfway round.
7. Not responding correctly to road markings
Seventh on the list is ignoring what is painted on the road: turning out of a left-only lane, straddling two lanes on a roundabout, crossing a solid white line when you should not, or entering a box junction (the criss-cross yellow lines) when your exit is not clear. It is marked under “Response to signals – Road markings.”
How to avoid it: lift your eyes and read the road surface as far ahead as you can, not just the few metres in front of the bonnet. Lane arrows, give-way lines and box junctions all give you warning if you are looking for them. Spotting them early gives you time to be in the right lane and the right position without a panicked last-moment correction. Multi-lane roundabouts are where this catches people most, so reading the painted lane arrows on the approach is what keeps you out of trouble.
8. Not responding correctly to traffic signs
Eighth, and closely related, is missing traffic signs: going the wrong side of a “keep left” sign, rolling through a stop or no-entry sign, driving in a bus lane when it is restricted, or reacting late to a change in the speed limit. The marking category is “Response to signals – Traffic signs.”
How to avoid it: signs are part of your scan, not background scenery. Treat a stop sign as an absolute – stop fully at the line, every time, even if it looks clear. Watch for speed-limit changes and adjust promptly, because acting late on a new limit is one of the listed examples of this fault. The skill is anticipation: see the sign, decide what it means, act in good time.
9. Poor positioning on the road during normal driving
Ninth is your road position when nothing in particular is happening – sitting too close to the kerb or too near the centre line, hogging the right-hand lane of a dual carriageway, or “straight-lining” a roundabout instead of following the curve. It is marked as “Positioning – Normal driving.”
How to avoid it: aim to hold a steady position roughly in the middle of your lane and keep it consistent. Drifting toward the kerb puts pedestrians at risk; drifting toward the centre worries oncoming drivers. On a dual carriageway, move back to the left once you have finished overtaking rather than sitting in the right-hand lane. Good position comes from looking well ahead, because where you look is where the car drifts.
10. Not driving at a safe and reasonable speed
Rounding out the top ten is speed – and not just going too fast. It covers staying above a limit too long after it drops, ignoring a temporary roadworks limit, but also failing to slow down for a busy high street, bad weather or a sharp bend. It is marked under “Use of speed.”
How to avoid it: drive to the conditions, not just the number on the sign. The limit is a maximum, not a target. Ease off for rain, fog, pedestrians and bends, and bring your speed down promptly when a limit drops so you are not still doing 40 in a 30. The principle is simple: always be able to stop safely within the distance you can see to be clear.
Why these faults fail people, and the one that comes up most
A quick word on how the marking works, because it explains why this list looks the way it does. The DVSA records three kinds of fault: a driving fault (a minor), a serious fault and a dangerous fault. You can collect up to 15 minors and still pass, but a single serious or dangerous fault is an instant fail. Crucially, a minor “could become a serious fault” if you keep repeating it – that is the DVSA’s own wording. Notice how many of the examples above include the word “repeatedly.” That is the trap. One missed blind spot is a minor; missing it at junction after junction becomes a serious fault, and a fail.
That is why the same handful of faults dominate. They are easy to do once and easy to do habitually, and it is the habit the examiner marks up. Fix the habit – make the observation, the mirror check, the blind spot automatic – and you have dealt with most of the top ten at once.
How to actually stop making them
Reading this list is the easy part. None of it is complicated to understand. The reason these faults stay at the top of the DVSA’s table year after year is that knowing about a blind spot and checking it without being told are two completely different things, and only the second one passes a test. That gap closes through repetition on real roads with someone next to you who catches the fault the moment it happens, names it, and makes you correct it until the correct version is the one that comes out under pressure.
That is what we build deliberately on an intensive course – drilling the high-value basics (junction observation, mirror discipline, road position) until they are instinct rather than effort. If you have already had lessons and it is one or two of these letting you down, our Improver course lets us target exactly those weak spots instead of starting over, and you can compare our intensive courses to find the level that fits your experience. If you have already sat the test and come away disappointed, our guide on bouncing back after a failed driving test walks through fixing the specific faults that caught you out rather than repeating the same ones. For the wider picture of what the examiner is watching across the whole test, our guide to passing your driving test first time pulls it all together. Get the boring fundamentals automatic, and the dramatic stuff takes care of itself.
Frequently Asked Questions
What is the most common reason for failing a driving test?
Not making effective observations at junctions – emerging or turning without looking properly, or looking too late to react. It tops the DVSA’s official list of the most common driving test faults almost every year, ahead of mirror use when changing direction. Most fails come from these everyday observation faults, not one-off dramatic mistakes.
What are the top 10 reasons people fail their driving test?
According to the DVSA’s official data for 2024 to 2025: junction observations, mirrors when changing direction, moving off safely, positioning on right turns, responding to traffic lights, steering control, responding to road markings, responding to traffic signs, normal road positioning, and driving at a safe and reasonable speed. Most are about observation and positioning rather than handling the car.
Is 3 minors of the same thing a fail?
Not automatically, but it can be. There is no fixed three-strikes rule. What the DVSA actually says is that a repeated driving fault “could become a serious fault” – so if you keep making the same mistake and the examiner judges it a habit that is genuinely unsafe, they can mark it up as one serious fault, which fails the test. Three separate, different minors is comfortably a pass.
How rare is it to get zero minors on a driving test?
A clean sheet with no minor faults is uncommon but far from impossible, and it carries no extra reward – 0 minors and 15 minors earn the identical licence, with no merit grade on the British test. Examiners do not expect perfection, so most people who pass pick up a handful of minors. Chasing a perfect zero often backfires, because driving tense and over-cautious creates faults of its own, such as undue hesitation.
What are the 5 F’s of driving?
The “5 F’s” is a vehicle-check mnemonic used in some overseas driving courses (Fluids, Fractures, Filth, Fasteners and Freedom), not part of the UK driving test. In Britain, the equivalent pre-drive routine is the cockpit drill and the “show me, tell me” vehicle safety questions, and the test itself assesses the 27 driving skills the DVSA lists as what you need to drive safely.
Is rolling back on a hill start a fail?
Not on its own. A small roll backwards during a hill start, with no danger and no other road user affected, is usually marked as a minor at most. It becomes a serious fault if the roll back is significant, you lose control, or you roll into the path of a vehicle or pedestrian behind you. The way to avoid it is solid clutch control and using the handbrake until you have found the biting point.