BMW 3 Series vs Skoda Octavia: which is the better used buy?

On DVSA MOT records the BMW 3 Series is the more reliable used buy: it passes its first MOT 3.2 percentage points more often than the Skoda Octavia once both are compared against what the national fleet scores at the same age. That comparison covers 63,394 real tests, not a survey.

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.

Model	Pass rate	Age-matched national	Difference	Tests
BMW 3 Series	79.1%	73.5%	+5.6	42,657
Skoda Octavia	80.5%	78.1%	+2.4	20,737

Source: DVSA MOT Anonymised Data 2025 (Open Government Licence v3.0). National first-time pass rate 77.3%. Applies to Great Britain — Northern Ireland is tested by the DVA under a separate manual.

BMW 3 Series

F30 (2012–2019) / G20 (2019–present) · D-segment executive saloon and touring estate. The most popular used premium car in the UK by volume. Available in a wide range of engines: 316i, 318i, 320i, 330i petrols; 316d, 318d, 320d, 330d diesels; 330e plug-in hybrid. Saloon, Touring (estate), and Gran Turismo body styles.

The BMW 3 Series is one of the best driver's cars in its segment but requires disciplined maintenance to avoid expensive repairs. The 320d diesel is by far the most popular UK-market variant — reliable at motorway mileage but requires a full service and timing chain history. The N47 diesel engine (pre-2015) had a timing chain tensioner failure issue at the rear of the engine — an expensive repair. The B47 diesel (post-2015) is significantly more reliable. On petrols, the B48 (post-2015 G20) is excellent. The key rule: full BMW dealer or BMW-specialist service history is essential. An unmaintained 3 Series is an expensive liability.

What goes wrong

N47 diesel timing chain failure (F30 2012–2015)critical
Chain rattle on cold start; rattling from rear of engine; engine management light; in severe cases, sudden engine failure
F30 2012–2015 with N47 diesel (316d, 318d, 320d) · From 60,000 miles; can occur earlier if oil changes were delayed · £3,000–£6,000 timing chain replacement (rear-mounted chain requires engine removal); up to £10,000+ if the chain has jumped and damaged the engine
Check: This is the single most critical check on any F30 N47 diesel. The N47 chain is rear-mounted — listen for chain rattle at idle with the bonnet up. Ask for proof of timing chain replacement in the service history. If the chain has not been replaced and the car has over 75,000 miles, budget for the repair or walk away. The B47 diesel (post-2015 on the F30 facelift and all G20) is unaffected.
Electric water pump failure (N20/B46/B48 petrols)major
Coolant warning light; engine overheating; steam from engine bay; loss of heat from heater
F30 2012–2019 petrol models (N20 engine) · From 50,000 miles; often fails between 60,000–95,000 miles · £600–£1,200 water pump replacement
Check: Check coolant level and condition. Ask about any history of overheating or coolant warning lights. The electric water pump on N20 engines is a known maintenance item — not catastrophic if caught early, but a failed pump can cause overheating if ignored. Budget for proactive replacement on high-mileage N20 cars.
320d/318d high-pressure fuel pump failure (N47)major
Hard starting; rough idle; engine cutting out; fuel pressure fault codes
F30 N47 diesel 2012–2015 · Above 75,000 miles · £800–£1,500 high-pressure fuel pump replacement
Check: Check for any hesitation or hard-starting behaviour on the test drive. N47 high-pressure fuel pump failures are common above 75,000 miles. If this is a known issue on the specific car, negotiate accordingly.
EGS automatic gearbox selector module failure (ZF 8HP)moderate
Gearbox warning light; "Transmission malfunction" message; car stuck in one gear; intermittent gear selection issues
F30 2012–2019 (ZF 8-speed automatic) · Above 60,000 miles · £400–£1,200 EGS module replacement; ZF gearbox service (fluid + filter) £300–£500
Check: Test the automatic gearbox through its full range — all gears, Sport mode, manual paddle shifts. Any hesitation, warning lights, or erratic behaviour requires investigation. Ask for ZF gearbox service history (fluid change every 35,000 miles prolongs life significantly).

Typical asking price:: F30 2015–2018 320d: £8,000–£15,000 | F30 2018–2019 facelift: £12,000–£18,000 | G20 2019–2022: £15,000–£28,000
Real-world economy:: 47–57 mpg (320d real-world UK mixed motorway); 35–44 mpg (320i petrol real-world)
Vehicle tax:: £200/year standard rate from the second year, hybrids included — the alternative-fuel discount ended on 1 April 2025. Cars registered 2001–2017 pay a CO2 band, roughly £20–£790/year (2026/27 rates).
Best years:: 2019, 2020, 2021, 2022
Years to avoid:: 2012, 2013, 2014

Full 3 Series fault guide Used BMWs

Skoda Octavia

Mk4, 2020+ · compact family hatch and estate (saloon-shaped hatch)

The Mk4 Skoda Octavia (2020+) shares the VW Golf Mk8 platform — including its early infotainment software bugs (resolved in 2023+ updates). The eTSI 48V mild-hybrid starter generator has occasional faults, and DSG DQ381 is well-sorted. Best-buy: 2023+. Worst: 2020–2022 infotainment.

What goes wrong

Mk4 infotainment softwaremoderate
Touchscreen freezes; haptic-touch climate slider non-responsive; CarPlay drops
2020–2022 · Free under software update
Check: Confirm software version updated to ME3.2 or later.
eTSI 48V starter generatorminor
Stop-start unavailable; "mild hybrid" warning
2020+ eTSI variants · £800–£1,200 unit replacement
Check: Test stop-start engagement once warm.
DSG DQ381 (wet-clutch) — generally robustminor
Rare hesitation; occasional fluid service flag
All DSG Mk4 · Service every 35,000 miles · DSG service £350–£500
Check: Service history must show DSG fluid + filter at correct interval.
Front lower control-arm bushingsminor
Knocking on rough surfaces
All Mk4 · 60,000+ miles · £220–£380
Check: Speed bump test.

Typical asking price:: £13,000–£30,000 (2020–2024)
Real-world economy:: 49–57 mpg 2.0 TDI; 42–47 mpg 1.5 TSI
Vehicle tax:: £200/year standard rate from the second year, hybrids included — the alternative-fuel discount ended on 1 April 2025. Cars registered 2001–2017 pay a CO2 band, roughly £20–£790/year (2026/27 rates).
Best years:: 2023, 2024
Years to avoid:: 2020, 2021, 2022

Full Octavia fault guide Used Skodas

Which one suits you

BMW 3 Series

Good for: Buyers who want a genuine driver's car and are prepared to maintain it properly. Motorway-mile buyers who will use the 320d's diesel efficiency on long UK commutes. Buyers with a BMW specialist garage lined up for servicing.

Less good for: Buyers who want the lowest total cost of ownership — a Toyota Corolla or Skoda Octavia will cost meaningfully less to run. F30 N47 diesel buyers without verified timing chain history — this is a potentially catastrophic repair. First-time BMW buyers who plan to service it at the cheapest possible garage — BMW models require BMW-specific knowledge and fluids.

Skoda Octavia

Good for: Practical family buyers wanting Golf substance with Skoda value — bigger boot, lower price.

Less good for: Buyers without tolerance for early Mk4 infotainment quirks.

Frequently Asked Questions

Which is more reliable, the BMW 3 Series or the Skoda Octavia?

The BMW 3 Series. It passes its first MOT 3.2 percentage points more often than the Skoda Octavia once both are age-adjusted, across 63,394 DVSA-recorded tests.

What is the MOT pass rate for the BMW 3 Series?

79.1% of BMW 3 Seriess pass their MOT first time, from 42,657 tests in DVSA's records. The national first-time rate is 77.3%, but cars of this model's age average 73.5% — so it runs 5.6 points better than its age group.

What is the MOT pass rate for the Skoda Octavia?

80.5% of Skoda Octavias pass their MOT first time, from 20,737 tests. Against the 78.1% that cars of its age average, it runs 2.4 points better.

Which years should I avoid?

For the BMW 3 Series, 2012–2014 F30 with N47 diesel: the N47 2.0-litre diesel used in 316d, 318d, and 320d had a rear-mounted timing chain that stretched and failed prematurely, often at 60,000–95,000 miles. The repair requires removing the engine — costs of £3,000–£6,000 were common. Many N47 engines were replaced under extended warranty or goodwill; survivors without documented chain replacement are high-risk. For the Skoda Octavia, Pre-2023 Mk4 inherited the Mk8 Golf's infotainment issues directly.

Which is cheaper to run?

The BMW 3 Series returns 47–57 mpg (320d real-world UK mixed motorway); 35–44 mpg (320i petrol real-world) in real UK driving; the Skoda Octavia returns 49–57 mpg 2.0 TDI; 42–47 mpg 1.5 TSI. Vehicle tax: 3 Series — £200/year standard rate from the second year, hybrids included — the alternative-fuel discount ended on 1 April 2025. Cars registered 2001–2017 pay a CO2 band, roughly £20–£790/year (2026/27 rates).; Octavia — £200/year standard rate from the second year, hybrids included — the alternative-fuel discount ended on 1 April 2025. Cars registered 2001–2017 pay a CO2 band, 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: 2026-08-14 / 2026-08-14.