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116d / 118d / 120d (N47, 2007–2011)

2007–2011 · diesel · 1995cc · 177hp

Engine codes: N47

Avoid

Reliability, common problems and owner reviews for the Bmw 1 Series E87 116d / 118d / 120d (N47, 2007–2011). Check this before you buy used.

The N47 diesel — the same notorious rear-mounted timing chain as the larger BMWs. It's prone to catastrophic failure, and the rear location (against the bulkhead) makes the repair extremely expensive ($2,000–3,500+). Any N47 over ~80,000 miles without documented chain replacement should be approached with great caution. Add swirl flaps. The diesel to avoid unless fully proven.

Same engine, other cars

This is the same physical engine (N47) sold under different names across brands. Reliability is broadly shared — cross-check these:

Known Issues

Timing chain failure (rear-mounted)critical

Rear timing chain stretches/snaps → engine destruction; rattle from the bulkhead on cold start is the warning. Rear location = very expensive repair.

Fix / Workaround: Only buy with documented chain replacement (uprated parts); short oil intervals; any rear rattle = walk away.

Repair cost: €1500–€3500

Typically appears after: 100,000 km

Swirl flap failurecritical

Intake swirl flaps degrade and can be ingested.

Fix / Workaround: Swirl-flap delete / blanking.

Repair cost: €150–€600

Mileage Thresholds

After 100,000 km: Timing chain failure risk significant.

Pre-Purchase Checklist

  • ☐Cold-start: listen at the REAR for chain rattle
  • ☐Demand documented chain replacement
  • ☐Swirl flap delete done?
  • ☐Best avoided without full proof

Frequently asked questions

Is the Bmw 1 Series E87 116d / 118d / 120d (N47, 2007–2011) reliable?

Avoid — The N47 diesel — the same notorious rear-mounted timing chain as the larger BMWs. It's prone to catastrophic failure, and the rear location (against the bulkhead) makes the repair extremely expensive ($2,000–3,500+). Any N47 over ~80,000 miles without documented chain replacement should be approached with great caution. Add swirl flaps. The diesel to avoid unless fully proven.

What are the common problems and reviews for the Bmw 1 Series E87 116d / 118d / 120d (N47, 2007–2011)?

The most commonly reported problems: Timing chain failure (rear-mounted), Swirl flap failure.

Is a used Bmw 1 Series E87 116d / 118d / 120d (N47, 2007–2011) worth buying?

A design flaw with no reliable fix, or a catastrophic-failure risk. Not worth the gamble at any price.