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Mini Clubman: Timing chain tensioner and guide failure — the 'death rattle' (N14/N18 Cooper S, also N12/N16)

Timing chain tensioner and guide failure — the 'death rattle' (N14/N18 Cooper S, also N12/N16) is a very common engine fault on the Mini Clubman on the 2008–2014 cars, and we rate it critical. Putting it right costs $1,200 to $4,500 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 12 documented faults on the Mini Clubman.

Vehicle
Mini Clubman
Only on
Cooper S / JCW
Years
2008–2014
Fuel
petrol
System
Engine

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

All Mini Clubman faults12 documented faults on this model

What you are looking at

The front of a dual overhead camshaft engine with the timing cover removed, exposing the timing chain and sprockets.Example of the part — not this vehicle

The front of a twin-cam engine with the timing cover off — chain, sprockets and guides.

Logansenf · CC BY-SA 4.0 · Wikimedia Commons

What goes wrong

The R55 Clubman's Prince engines are infamous for timing chain trouble: the tensioner weakens and the plastic guides crack, letting the chain rattle loudly on cold start — the so-called death rattle. Left alone the chain stretches or the guides break up and the chain can jump or snap, destroying the engine; the turbo N14 in the Cooper S is worst but the naturally aspirated N12/N16 and later N18 are all affected. A documented chain, tensioner and guide replacement is one of the best pieces of history an R55 can have.

What you would notice

  • Loud diesel-like rattle for a few seconds on cold start
  • Constant rattle at idle as it worsens
  • Check-engine light with cam/crank correlation codes
  • Engine cranks but won't start (chain jumped)

How to check it

Where to look. Timing chain on the transmission end of the engine, under the plastic engine cover

Insist on starting the engine completely cold — ask the seller not to warm it before you arrive. Listen at the right-hand (chain) end of the engine for rattle in the first seconds. Any metallic rattle beyond 2-3 seconds means budget for a chain kit. Look for invoices for chain/tensioner/guide work.

Parts involved: Timing chain.

What it costs to put right

$1,200 to $4,500 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

  • “Has the timing chain, tensioner and guides been replaced, and is there an invoice?”
  • “Does it ever rattle on cold start?”

Now check the Mini Clubman 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.

  • Lohen — R56 MINI N14 death rattle/timing chain issue explained
  • North American Motoring — N14 engine important maintenance items and common issues
  • Mintech Spares — N14 & N18 Cooper S & JCW turbo engine issues

Mini Clubman buyer questions

Is timing chain tensioner and guide failure — the 'death rattle' (n14/n18 cooper s, also n12/n16) serious on a Mini Clubman?

We rate it critical and very common on the Mini Clubman. The R55 Clubman's Prince engines are infamous for timing chain trouble: the tensioner weakens and the plastic guides crack, letting the chain rattle loudly on cold start — the so-called death rattle. Left alone the chain stretches or the guides break up and the chain can jump or snap, destroying the engine; the turbo N14 in the Cooper S is worst but the naturally aspirated N12/N16 and later N18 are all affected. A documented chain, tensioner and guide replacement is one of the best pieces of history an R55 can have.

How much does it cost to fix on a Mini Clubman?

$1,200 to $4,500 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 Mini Clubman years are affected?

Our research records this fault on the 2008–2014 Mini Clubman. 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?

Insist on starting the engine completely cold — ask the seller not to warm it before you arrive. Listen at the right-hand (chain) end of the engine for rattle in the first seconds. Any metallic rattle beyond 2-3 seconds means budget for a chain kit. Look for invoices for chain/tensioner/guide work. Look here: Timing chain on the transmission end of the engine, under the plastic engine cover