Audi A3 vs BMW 1 Series: which is the better used buy?

On DVSA MOT records the Audi A3 and the BMW 1 Series are too close to call — 0.6 percentage points apart on first-time MOT passes once you allow for the age of each fleet, which is inside what the choice of cars counted can move. A winner is named only at 2 points or more. A pass with rectification at the station counts as a pass here, and as a failure in DVSA's own initial-test measure. Choose on the fault patterns and running costs below rather than on reliability.

MOT first-time pass rate

Counted from DVSA’s anonymised MOT test records. “vs age-matched” compares each model against what the national fleet scores at the same age — the only fair better-or-worse number, because an older fleet fails more whatever its build quality.

Audi A3

Pass rate80.1%

Age-matched national76.4%

Difference+3.7

Tests43,706

BMW 1 Series

Pass rate81.3%

Age-matched national77.0%

Difference+4.3

Tests41,220

Model	Pass rate	Age-matched national	Difference	Tests
Audi A3	80.1%	76.4%	+3.7	43,706
BMW 1 Series	81.3%	77.0%	+4.3	41,220

These figures count every generation still on the road, not only the one described below: mostly Audi A3s registered 2004–2022 and BMW 1 Series registered 2005–2022.

Source: DVSA MOT Anonymised Data 2025 (Open Government Licence v3.0). National first-time pass rate 77.3%. Class 4 tests in Great Britain, test type NT (a normal annual test), retests excluded. A pass, or a pass with rectification at the station, counts as a first-time pass; DVSA's own initial-test measure counts a rectified pass as a failure and so reports a lower figure. Testing in Northern Ireland is run separately by the DVA under its own rules. The difference is worked out before rounding, so it can be 0.1 away from the two rounded figures beside it.

Audi A3

8V (2013–2020) · Premium compact/family hatchback (also sold as Sportback, saloon and cabriolet) competing with the BMW 1 Series, Mercedes A-Class and VW Golf

The Audi A3 8V (2013–2020) is a solidly built, reasonably reliable premium hatchback. The key check is the 7-speed DQ200 dry-clutch S tronic on 1.4 TFSI and lower-power diesels: hesitant pull-away or low-speed shudder points to expensive mechatronic or clutch wear. On a 2.0 TDI, insist on proof of the cambelt change. Best buy: 2019–2020. Worst: no single year stands out on DVSA MOT results.

What goes wrong

S tronic (DSG) dry-clutch gearboxmajor
Hesitant or jerky pulling away from a stop, a shudder felt through the car at low speed, delayed gear engagement, an occasional flashing PRNDS display, and in worse cases a gearbox fault warning with the car defaulting to limp mode.
2013–2020, most reported on 1.4 TFSI petrol and lower-power diesel models fitted with the 7-speed DQ200 dry-clutch unit · Problems most commonly emerge from around 40,000–60,000 miles onward, a dry-clutch box for which VW Group schedules no oil service · Roughly £800–£1,500 for a specialist mechatronic unit repair or reconditioning; a full replacement unit from a main dealer can run to £2,000 or more
Check: On the test drive, pull away from rest several times both cold and warm and feel for hesitation or shudder; VW Group schedules no gearbox oil service for the dry-clutch DQ200, so absent DSG fluid records are normal rather than a red flag (a wet-clutch S tronic, as on the 2.0 TDI quattro, does have a scheduled oil service, so check which box the car has); ask a garage to scan for stored gearbox fault codes
2.0 TDI cambelt (timing belt)critical
No warning symptoms beforehand — if the belt snaps the pistons strike the valves and the engine is destroyed.
2013–2020 2.0 TDI diesel models · Manufacturer interval is up to around 100,000 miles or 5 years, though many independent specialists recommend renewing by 75,000 miles for peace of mind on a used example · Roughly £400–£900 for a routine belt, tensioner and water pump replacement at an independent specialist; a neglected belt that snaps typically means an engine rebuild or replacement costing several thousand pounds
Check: Get documented proof of cambelt replacement, including date and mileage, from the service history; if there is no evidence and the car is anywhere near the interval, budget for immediate replacement or negotiate the price down accordingly
1.4 TFSI wastegate actuator rattleminor
A metallic rattling noise from the engine bay, most noticeable on light throttle around 1,600–2,200rpm and worse from cold; can progress to reduced boost or limp mode if left unaddressed.
Most reported on pre-facelift 2013–2016 1.4 TFSI models, particularly the lower-power 122/125PS versions · Linked more to corrosion and wear of the actuator linkage than to a fixed mileage, but more commonly reported from around 40,000 miles onward · From around £50–£150 for an aftermarket actuator linkage fix, up to roughly £400–£900 for a full wastegate actuator or turbocharger replacement
Check: Listen for a rattle from the engine bay on a cold start and under light throttle in the 1,600–2,200rpm range
2.0 TDI EGR valve and coolermajor
Rough idle, hesitant throttle response, an illuminated engine management light, and in more serious cases the EGR cooler leaking coolant internally.
2.0 TDI diesel models across the 8V range, more common on cars used mainly for short urban journeys · Commonly reported from around 60,000–90,000 miles onward · Roughly £250–£500 for an EGR valve clean or replacement; around £500–£900 if the EGR cooler itself needs replacing
Check: Ask about any history of engine warning lights or limp mode; check coolant for contamination and ask whether the EGR system has recently been cleaned or replaced

Typical asking price:: £4,990–£13,485, median £8,995 (middle 80% and median, cars on Autoza on 1 October 2026)
Fuel economy:: 1.0 TFSI: 47–53 mpg. 1.4/1.5 TFSI: 42–48 mpg. 2.0 TDI: 52–60 mpg.
Vehicle tax:: £200/year standard rate from the second year, hybrids included — the alternative-fuel discount ended on 1 April 2025. A car registered from April 2017 with a list price over £40,000 when new adds the £440/year Expensive Car Supplement in years 2–6 (£640 in all). Cars registered 2001–2017 pay a CO2 band, roughly £20–£790/year (2026/27 rates).
Best years:: 2019, 2020

Used Audi A3s for sale Full A3 fault guide Used Audis

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BMW 1 Series

E87 2004–2011, F20 and F21 2011–2019, F40 2019–on · premium compact hatchback

Every 1 Series engine ever sold in the UK uses a timing CHAIN — there is no cambelt variant in any generation, so a seller offering "belt done" has either replaced something else or is describing another car. The N47 diesel chain is the most discussed fault on the internet and the reason many buyers avoid early diesels; it is owner-reported rather than recalled, and frequency is not published. There are also a large number of DVSA recalls across the generations, so checking by registration is worth more here than on most models.

What goes wrong

Safety recall R/2022/255recall
Undetected EGR System leaks may cause thermal activity in the intake manifold
322,745 vehicles in the whole recall (DVSA’s figure for every model it covers) · built between 12 February 2015 and 1 March 2018
Large recall — 322,745 vehicles. Check a car by registration on GOV.UK.
Safety recall R/2022/206recall
The exhaust gas recirculation cooler may leak over time and cause thermal incident
319,399 vehicles in the whole recall (DVSA’s figure for every model it covers) · built between 3 November 2011 and 3 June 2019
Large recall — 319,399 vehicles. Check a car by registration on GOV.UK.
Engine — N47 diesel timing chaincritical
A rattle from the back of the engine on start-up, and in the worst reported cases chain failure with major engine damage. The chain is at the gearbox end, which is why the job is expensive.
Early diesels · £1,500–£3,000 because the engine usually comes out
Check: Cold-start it yourself and listen at the bulkhead, not the front of the engine. This is the most repeated claim about any BMW on the internet and there is no recall or published dataset behind it, so frequency is unknown and most cars never show it. Treat it as a reason to cold-start and read the history, not as a fault every early diesel has.
Engine — N20 petrol timing chain guidescritical
Chain rattle on the four-cylinder turbo petrol.
F20 125i era · £1,200–£2,500
Check: Same test: cold start, listen, and read the service history. Frequency not published.

Typical asking price:: £3,795–£19,990, median £9,000 (middle 80% and median, cars on Autoza on 1 October 2026)
Fuel economy:: 50–60 mpg real-world for the 116d/118d diesels; 35–45 for the petrols
Vehicle tax:: £200/year standard rate from the second year, hybrids included — the alternative-fuel discount ended on 1 April 2025. A car registered from April 2017 with a list price over £40,000 when new adds the £440/year Expensive Car Supplement in years 2–6 (£640 in all). Cars registered 2001–2017 pay a CO2 band, roughly £20–£790/year (2026/27 rates).
Best years:: 2016, 2017, 2020, 2021
Years to avoid:: 2007, 2008, 2009

Used BMW 1 Series for sale Full 1 Series fault guide Used BMWs

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Which one suits you

Audi A3

Good for: Buyers wanting Golf-level engineering with a more premium interior and stronger resale values. A 2016+ facelift car with the revised infotainment and a documented cambelt history is the safer buy.

Less good for: Anyone considering a pre-2016 1.4 TFSI or 2.0 TDI without a documented cambelt change — both engines drive their camshafts by a toothed belt, and a failed belt is the single most expensive fault on the car.

BMW 1 Series

Good for: Drivers who want rear-wheel drive and a premium badge at hatchback money, and who will cold-start the car before buying.

Less good for: Anyone buying an early diesel without cold-starting it and reading the full service history.

Frequently Asked Questions

Which is more reliable, the Audi A3 or the BMW 1 Series?

Neither, on the evidence. Their first-time MOT pass rates sit 0.6 percentage points apart once each is compared against the national rate for cars of the same age, which is too close to call (we name a winner only at 2 points or more). A pass with rectification at the station counts as a pass here, and as a failure in DVSA's own initial-test measure. Pick on the specific faults each is prone to instead.

How do the MOT pass rates of the Audi A3 and the BMW 1 Series compare?

80.1% of Audi A3s pass their MOT first time (43,706 tests in DVSA's records) and 81.3% of BMW 1 Series pass their MOT first time (41,220 tests). The national first-time rate is 77.3%, but cars of the Audi A3's age average 76.4% and cars of the BMW 1 Series's age 77.0% — so the Audi A3 runs 3.7 points better than its age group and the BMW 1 Series runs 4.3 points better than its own. A pass with rectification at the station counts as a pass here, and as a failure in DVSA's own initial-test measure.

Which years of the Audi A3 and BMW 1 Series should I avoid?

Audi A3: The earliest 2013–2014 cars carry the most forum and press reports of the 1.4 TFSI wastegate actuator rattle and diesel EGR/DPF glitches that Audi progressively addressed through later production changes, and as the oldest cars in the generation they have had the longest time to accumulate DSG mechatronic and clutch wear. The DVSA MOT table on this page rates 2013 and 2014 registrations above all cars registered those years, so they are not named as years to avoid. Judge a A3 by its registration, service history and the checks below rather than by year. BMW 1 Series: The years most associated with the N47 diesel chain discussion (owner-reported; frequency unknown), and the oldest cars carry the most accumulated recall exposure: E87 cars built to 2011 are inside R/2018/132 (positive battery cable, 311,848 vehicles in the whole recall), R/2021/064 (blower-regulator wiring, 181,011) and the Takata-type airbag recalls R/2024/403 and R/2025/327.

Is the Audi A3 or the BMW 1 Series cheaper to run?

On fuel the two are too close to call: the most economical versions return up to 60 mpg (Audi A3) and 60 mpg (BMW 1 Series), on the figures in our model guides. For cars registered from April 2017, vehicle tax works the same way for both: the £200/year standard rate from the second year, hybrids included, plus the £440/year Expensive Car Supplement in years 2–6 on a car that listed at over £40,000 new — the price when new, not what you pay for it used. Any Audi A3 or BMW 1 Series registered between 1 March 2001 and 31 March 2017 pays a CO2 band instead, roughly £20–£790/year (2026/27 rates). Insurance differs mainly by driver and postcode rather than by model, so treat any model-level insurance figure with caution.

MOT figures are counted from DVSA records and are the only measured statistic here. Prices, economy and tax bands are indicative and vary by specification, condition and where the car has lived. Last reviewed: 2026-09-24 / 2026-09-24.