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CriticalCommonEngine

BMW 3 Series: S65 4.0L V8 rod-bearing wear / failure (M3 E90/E92/E93)

S65 4.0L V8 rod-bearing wear / failure (M3 E90/E92/E93) is a common engine fault on the BMW 3 Series on the 2007–2013 cars, and we rate it critical. Putting it right costs $3,000 to $6,000 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 88 documented faults on the BMW 3 Series.

Vehicle
BMW 3 Series
Only on
AMG / BMW M
Engine
S65
Years
2007–2013
Fuel
petrol
System
Engine

This page covers the BMW 3 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 3 Series faults88 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph for this fault yet. We would rather show none than show a picture of something else.

What goes wrong

The defining fault of the E9x M3: the high-revving S65 4.0L V8 wears its connecting-rod bearings prematurely because of marginal factory clearances. Worn bearings tick at low rpm, drop oil pressure and shed metal into the oil; if ignored a bearing can spin and destroy the engine. Specialists strongly recommend replacing the rod bearings (often with upgraded clearance kits) around 100,000-130,000 km. A cheap M3 with no bearing history is a serious gamble - this is the single most important check on the car.

What you would notice

  • Ticking or knocking from the engine at idle / low rpm
  • Falling or fluctuating oil pressure
  • Metal/glitter in the oil or on the sump plug magnet
  • Rumble on start-up

How to check it

Where to look. Connecting-rod bearings inside the 4.0L V8 bottom end

  1. Ask directly for documented rod-bearing replacement and the km it was done; treat 'never done' on a high-km car as a major cost.

  2. Listen for a low-rpm tick/knock and, ideally, have an oil analysis or sump-plug inspection done.

  3. This is worth a specialist pre-purchase inspection.

What it costs to put right

$3,000 to $6,000 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

  • “Have the rod bearings been replaced, and at what km?”
  • “Is there any ticking or knock at idle, and what does the oil look like?”

Now check the BMW 3 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.

  • EuroAutoPro – Common Problems of the BMW E92 M3 (rod bearings)
  • ECS Tuning – Common Problems For The BMW E92 M3
  • CarChecker.pro – BMW M3 E90/E92 S65 reliability & costs

BMW 3 Series buyer questions

Is s65 4.0l v8 rod-bearing wear / failure (m3 e90/e92/e93) serious on a BMW 3 Series?

We rate it critical and common on the BMW 3 Series. The defining fault of the E9x M3: the high-revving S65 4.0L V8 wears its connecting-rod bearings prematurely because of marginal factory clearances. Worn bearings tick at low rpm, drop oil pressure and shed metal into the oil; if ignored a bearing can spin and destroy the engine. Specialists strongly recommend replacing the rod bearings (often with upgraded clearance kits) around 100,000-130,000 km. A cheap M3 with no bearing history is a serious gamble - this is the single most important check on the car.

How much does it cost to fix on a BMW 3 Series?

$3,000 to $6,000 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 3 Series years are affected?

Our research records this fault on the 2007–2013 BMW 3 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 directly for documented rod-bearing replacement and the km it was done; treat 'never done' on a high-km car as a major cost. Listen for a low-rpm tick/knock and, ideally, have an oil analysis or sump-plug inspection done. This is worth a specialist pre-purchase inspection. Look here: Connecting-rod bearings inside the 4.0L V8 bottom end