Dumbarton test centre: 52.8% pass rate, £330 to get through it.

Dumbarton is a small centre by DVSA standards: 1,659 car practical tests in 2025/26, of which 876 were passes, giving 52.8%. At that volume a run of two or three unusual weeks moves the annual figure visibly, so treat the number as a guide to the roads rather than a precise ranking. It sits 139th of 308 nationally and 44th of 67 in Scotland.

That lands within 2.8 percentage points of the 50.03% national figure and 3.5 points above the 49.3% Scotland average, which makes Dumbarton an ordinary centre on the DVSA table and puts the cost question back on preparation rather than location.

Turn 52.8% into money. One divided by the pass rate gives 1.89 expected attempts before a first pass, so the average candidate at Dumbarton pays the £62 weekday DVSA fee about 1.89 times, or £117. Add 0.89 expected retakes at 7 hours of extra tuition each, charged at the Scotland rate of £34 an hour, and the extra lessons come to £213. The test cycle at Dumbarton is therefore about £330. Testing here therefore saves about £32 against a centre sitting on the 50.03% national average, because the higher pass rate buys back part of an attempt.

A fail at Dumbarton costs time as well as money. The median wait between booking and testing was 12.9 weeks in July 2026, 1.0 weeks above the 11.9-week national median. At 0.89 expected retakes that is about 11.5 weeks of additional queueing, and most learners keep paying for an hour or two a month through it. In the same month DVSA offered 455 standard slots inside the booking window here and 5.9% of them were still free to book.

The first-attempt picture is harder here than the headline. 878 candidates sat their first test at Dumbarton and 451 passed, 51.4%, which is 1.4 points below the all-attempts rate. 3 of those first tests were passed with no driving faults recorded at all, 0.34% of them. Budget for the second booking from the start rather than treating it as the exception.

Since 2021/22 the pass rate at Dumbarton has risen by 6.7 points, from 46.1% to 52.8%. Test volume has shrunk over the same span, from 2,035 to 1,659 tests a year. On the cost model above, that shift alone is worth about £83 to the average candidate.

Male and female candidates are within a point of each other at Dumbarton, 52.6% against 53.1%. Automatic tests made up 15.7% of the workload and passed at 46.7%, 6.1 points below the manual-inclusive rate, worth knowing before paying the automatic lesson premium. Month to month the rate ran from 47.2% in January 2026 to 62.2% in June 2025, a 15.1-point swing that shows how little a single month proves.

Among centres of a similar size in Scotland, Lanark runs 5.3 points higher at 58.1%. On the same arithmetic that is roughly £52 of expected difference. Before moving, price the switch: a new instructor or extra travel for route familiarity typically costs £60 to £120 plus two settling-in lessons, which eats most of a gap under about eight points.