MajorCommonEngine

Alfa Romeo MiTo: 1.4 TBi Turbo Actuator Failure

1.4 TBi Turbo Actuator Failure is a common engine fault on the Alfa Romeo MiTo on the 2008–2018 cars, and we rate it major. Putting it right costs $400 to $1,100 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 7 documented faults on the Alfa Romeo MiTo.

Vehicle: Alfa Romeo MiTo
Engine: 1.4L
Years: 2008–2018
Fuel: petrol
System: Engine

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

All Alfa Romeo MiTo faults7 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 1.4 TBi (Turbo Benzina Intercooled) engine used in the MiTo shares the same Garrett VNT turbocharger actuator assembly as other Fiat Group small-displacement turbos. The actuator diaphragm or electronic motor fails from heat fatigue and corrosion. On the MiTo this is worsened by the confined engine bay offering poor heat dissipation around the turbocharger. Failure leads to wastegate sticking open causing chronic underboost, or sticking closed causing overboost conditions that are damaging to the engine internals and boost control system.

What you would notice

Check engine light with turbo boost fault codes
Noticeable loss of power above 2000 RPM
Engine entering limp mode under load
Sluggish acceleration with flat mid-range power

How to check it

Where to look. Top of turbocharger, firewall side of engine

Scan for turbo-related fault codes before purchase.
With engine running, check for boost hesitation under light throttle.
Inspect actuator arm for free movement and signs of corrosion or cracking around the actuator body housing near the turbocharger.

Parts involved: Turbocharger.

What it costs to put right

$400 to $1,100 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 car ever gone into limp mode?”
“Any engine fault codes present or recently cleared?”
“Has the turbo been serviced or replaced?”

Now check the Alfa Romeo MiTo 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 published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.

Alfa Romeo MiTo buyer questions

Is 1.4 tbi turbo actuator failure serious on a Alfa Romeo MiTo?

We rate it major and common on the Alfa Romeo MiTo. The 1.4 TBi (Turbo Benzina Intercooled) engine used in the MiTo shares the same Garrett VNT turbocharger actuator assembly as other Fiat Group small-displacement turbos. The actuator diaphragm or electronic motor fails from heat fatigue and corrosion. On the MiTo this is worsened by the confined engine bay offering poor heat dissipation around the turbocharger. Failure leads to wastegate sticking open causing chronic underboost, or sticking closed causing overboost conditions that are damaging to the engine internals and boost control system.

How much does it cost to fix on a Alfa Romeo MiTo?

$400 to $1,100 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 Alfa Romeo MiTo years are affected?

Our research records this fault on the 2008–2018 Alfa Romeo MiTo. 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?

Scan for turbo-related fault codes before purchase. With engine running, check for boost hesitation under light throttle. Inspect actuator arm for free movement and signs of corrosion or cracking around the actuator body housing near the turbocharger. Look here: Top of turbocharger, firewall side of engine