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320i / 328i (N20 turbo)

2012–2016 · petrol · 1997cc · 245hp

Engine codes: N20

Maint. Sensitive

Reliability, common problems and owner reviews for the Bmw 3 Series F30 320i / 328i (N20 turbo). Check this before you buy used.

The N20 2.0 turbo is a strong, smooth and efficient petrol — but the defining concern is the timing chain: early N20s (roughly 2012–2015) are known for chain and tensioner/guide wear that can rattle and, if ignored, fail, which is a major repair. BMW revised the parts later. Plus oil-filter-housing gasket leaks, the oil-consumption typical of these turbos, and turbo/PCV care. A documented car with the revised chain (or a replacement done) and clean oil is a good engine; a rattling early one is a serious warning.

Same engine, other cars

This is the same physical engine (B48) sold under different names across brands. Reliability is broadly shared — cross-check these:

Known Issues

Timing chain / guides (early N20)critical

Early N20 chain, tensioner and guides wear → rattle; failure is a major repair. Revised later.

Fix / Workaround: Cold-start rattle check; confirm revised parts/replacement; strict oil.

Repair cost: €800–€2500

Typically appears after: 100,000 km

Oil-filter-housing gasket / oil userecurring

OFHG leaks; some oil consumption.

Fix / Workaround: Replace gasket; monitor oil.

Repair cost: €150–€700

Typically appears after: 110,000 km

Year Cutoffs

2015: Before — Early N20 chain/guides more failure-prone. After — Revised chain components later.

Mileage Thresholds

After 120,000 km: Chain-wear window (early).

Pre-Purchase Checklist

  • ☐Cold-start chain rattle check
  • ☐Revised chain / replacement history
  • ☐Oil + OFHG history

Frequently asked questions

Is the Bmw 3 Series F30 320i / 328i (N20 turbo) reliable?

Maint. Sensitive — The N20 2.0 turbo is a strong, smooth and efficient petrol — but the defining concern is the timing chain: early N20s (roughly 2012–2015) are known for chain and tensioner/guide wear that can rattle and, if ignored, fail, which is a major repair. BMW revised the parts later. Plus oil-filter-housing gasket leaks, the oil-consumption typical of these turbos, and turbo/PCV care. A documented car with the revised chain (or a replacement done) and clean oil is a good engine; a rattling early one is a serious warning.

What are the common problems and reviews for the Bmw 3 Series F30 320i / 328i (N20 turbo)?

The most commonly reported problems: Timing chain / guides (early N20), Oil-filter-housing gasket / oil use.

Is a used Bmw 3 Series F30 320i / 328i (N20 turbo) worth buying?

Fine if serviced correctly — but it punishes neglect hard. History and the right consumables matter.