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BMW 5 Series: N63 4.4L V8 twin-turbo heavy oil consumption & valve stem seals (550i F10)

N63 4.4L V8 twin-turbo heavy oil consumption & valve stem seals (550i F10) is a very common engine fault on the BMW 5 Series on the 2010–2016 cars, and we rate it major. Putting it right costs $4,000 to $8,000 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 58 documented faults on the BMW 5 Series.

Vehicle
BMW 5 Series
Only on
Bi-Turbo / twin-turbo
Engine
N63
Years
2010–2016
Fuel
petrol
System
Engine

This page covers the BMW 5 Series as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All BMW 5 Series faults58 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph of the Turbocharger yet. We would rather show none than show a picture of a different part.

What goes wrong

The F10 550i's hot-vee N63 4.4L twin-turbo V8 is notorious for heavy oil consumption from degraded valve stem seals - the intense heat between the cylinder banks cooks the seals, so oil is drawn into the combustion chamber and burned. Owners can see a litre gone every 1,000-1,500 km, with a puff of blue smoke on start-up or after idling. BMW quietly raised the official oil capacity to mask it. Replacing the valve stem seals is a major, labour-heavy job. Frequent low-oil running also accelerates other wear.

What you would notice

  • Blue/grey smoke on start-up or after idling
  • Rapidly dropping oil level, frequent top-ups
  • Burning-oil smell
  • Fouled spark plugs / misfires

How to check it

Where to look. Valve stem seals in the 4.4L V8 cylinder heads (inside the hot vee)

  1. Ask how much oil it uses between services - anything under ~1,500 km per litre is a red flag.

  2. Watch for a smoke puff on cold start and after a hot idle.

  3. Check service records for repeated oil top-ups and whether valve stem seals have been done.

Parts involved: Turbocharger.

What it costs to put right

$4,000 to $8,000 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

  • “How much oil does it use between services?”
  • “Does it puff blue smoke on start-up?”
  • “Have the valve stem seals been replaced?”

Now check the BMW 5 Series you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in the sources below. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them.

  • f10.5post.com – F10 N63 typical issues list
  • MINHS Automotive – BMW N63 Valve Stem Seals Repair
  • bmwinsights.com – Common BMW N63 Engine Problems

BMW 5 Series buyer questions

Is n63 4.4l v8 twin-turbo heavy oil consumption & valve stem seals (550i f10) serious on a BMW 5 Series?

We rate it major and very common on the BMW 5 Series. The F10 550i's hot-vee N63 4.4L twin-turbo V8 is notorious for heavy oil consumption from degraded valve stem seals - the intense heat between the cylinder banks cooks the seals, so oil is drawn into the combustion chamber and burned. Owners can see a litre gone every 1,000-1,500 km, with a puff of blue smoke on start-up or after idling. BMW quietly raised the official oil capacity to mask it. Replacing the valve stem seals is a major, labour-heavy job. Frequent low-oil running also accelerates other wear.

How much does it cost to fix on a BMW 5 Series?

$4,000 to $8,000 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which BMW 5 Series years are affected?

Our research records this fault on the 2010–2016 BMW 5 Series. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.

How do I check for it before I buy?

Ask how much oil it uses between services - anything under ~1,500 km per litre is a red flag. Watch for a smoke puff on cold start and after a hot idle. Check service records for repeated oil top-ups and whether valve stem seals have been done. Look here: Valve stem seals in the 4.4L V8 cylinder heads (inside the hot vee)