Mechanical · Hackbridge, South London

Turbo replacement across South London, with the cause found first

Turbochargers seldom die of old age. They die because oil stopped reaching a bearing, or debris went through the compressor, or carbon seized the vane mechanism, and a replacement fitted without answering that question tends to last months rather than years. Work at our Hackbridge unit therefore covers the turbo and everything feeding it, on cars and vans from across South London. Prices begin at £600 depending on the engine and on what the failure has taken with it, and the quote is written and agreed before a part is ordered.

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From £600 · 4–8 hours
Mon–Sat 8am–8pm

Jaguar in for engine work at KITH Cars Garage & Bodyworks, Hackbridge

From £600Written quote before we start

4–8 hoursTypical time in the workshop

3 monthsWorkmanship warranty

17 areasCollection across South London

Boost logged, not guessed

Requested against actual boost on a data trace is the first thing we show you, and it regularly clears the turbo of blame altogether.

Oil feed renewed every time

A replacement goes on with a new or proven feed line and fresh oil, because restricted supply is what killed most of the units we take off.

Both options put in front of you

New OE-equivalent and remanufactured units are quoted side by side with their warranties, and which one goes on remains your decision.

Exhaust checked afterwards

Back pressure and filter condition are measured once the new turbo is running, so you are not handed a car destined to return with a blocked filter.

In the workshop

How we handle turbo replacement at Hackbridge

The first part of this job happens on the road, not in a bay. We log requested and actual boost side by side on a data trace, watch air mass and exhaust back pressure alongside them, and note when the ECU steps in. Back inside, the smoke machine goes onto the intake at low pressure, and split intercooler hoses, cracked plastic elbows and perished vacuum lines give themselves away within seconds. A dial gauge measures shaft end float and a hand finds radial movement, both judged against the figures for that particular unit rather than a rule of thumb.

You get to see the turbo before you pay for one. The compressor wheel is photographed through the intake, oil drained from the boost pipework goes into a tray so you can see how much there was, and a suspect oil feed pipe is cut open so any carbon restriction inside it is visible rather than theoretical. We will not hand a car back with a new turbo and the original oil feed and old oil still in place, because that is precisely how the second one fails. Unbranded rebuilt units are the other thing we decline, however cheaply they are offered, since a shaft turning that fast depends on balance we cannot verify.

The quote separates the turbo from its collateral damage. The unit, gaskets, oil feed line, filters and oil form the fixed part. The unknowns are manifold studs that may shear on removal, an intercooler that may need replacing rather than flushing, and a particulate filter that may have taken on ash during a long seal leak, so each is costed before work begins and you see the ceiling as well as the floor. Where a remanufactured unit exists we give both figures with their warranty terms and let you choose. Where the sums say the vehicle is not worth the repair, you get told that too.

Mechanical

Turbo Replacement: what’s involved

A turbocharger is driven by exhaust gas leaving the engine. That gas spins a turbine wheel which, through a shaft no thicker than a pencil, drives a compressor wheel on the other side, forcing in more air than the engine could ever draw on its own. Under load the shaft turns well beyond 150,000 rpm, carried on a film of engine oil only microns thick.

Boost is limited either by a wastegate that bleeds exhaust gas past the turbine, or, on most modern diesels, by variable geometry vanes that change the angle at which gas strikes the turbine wheel. An actuator moves them on command from the engine ECU, which constantly compares the boost it asked for against the figure the sensor reports back. That comparison is where honest diagnosis starts, because one underboost code can equally mean a dead turbo, a leaking pipe or a vane ring packed with carbon.

Signs your turbo is failing

Power falls away as boost should build

The car pulls cleanly from low revs then flattens out or drops into limp mode partway up the rev range. Underboost fault codes normally sit behind it.

Siren whine that tracks the throttle

A healthy turbo makes a soft rush of air. A loud siren or aircraft-like howl rising and falling with load points to shaft play or damaged compressor blades.

Rattle or grinding under load

Metallic noise as boost comes in means a wheel is touching its housing. Keep driving and the blades break up, either into the engine or back through the catalyst.

Blue smoke when accelerating or on overrun

Oil passing the turbine or compressor seals burns blue. Worn valve stem seals give a similar colour on a cold start, so we look for oil in the intake pipework before blaming the turbo.

Oil inside the intercooler and boost pipes

Pulling a hose off and finding it wet inside is a strong sign, though a blocked crankcase breather can push the same oil mist through a perfectly good turbo.

Using oil with nothing on the drive

A car needing oil between services with no drips underneath is often losing it through the turbo seals and out of the exhaust.

Boost that hunts or surges

Vanes gummed with carbon, a split vacuum line or a tired actuator make boost swing about, and the ECU can log overboost faults as well as underboost ones.

Repeated particulate filter warnings

Oil getting past the seals loads a diesel particulate filter with ash that no regeneration can burn away, so blocked filter warnings often arrive alongside a failing turbo.

When does a turbo need replacing?

A turbocharger has no replacement interval and should in principle last the life of the engine. It normally fails because something else went wrong first. Oil is the usual culprit: a starved or contaminated supply, a feed pipe coked up with carbon, a stretched oil change interval or the wrong grade for the engine. After that comes damage from debris drawn through a split intake or a collapsing air filter, then overspeed on a badly mapped engine, and carbon seizing the vane mechanism on a car used only for short trips.

Oil and filter changed on time to the manufacturer's specification is the single biggest factor in turbo life
Air filter renewed at every service, with the intake ducting checked for splits
Diesels used mainly in town benefit from a regular longer run at steady motorway revs
Investigate underboost, overboost or limp mode as soon as it first appears
Have the oil feed line checked whenever a turbo is replaced or an engine has run hot

How we replace a turbo

Confirm the fault on the roadWe drive the car logging requested against actual boost, air mass and exhaust back pressure, and note the exact point where the ECU intervenes.
Look for the cheaper answers firstA smoke test exposes split intercooler hoses and cracked plastic elbows in seconds. We also check actuator travel, the boost sensor reading and whether a blocked particulate filter is choking the exhaust.
Inspect the unit itselfWith the intake off we examine the compressor wheel for chipped blades and oil, measure radial and axial shaft play against the figures for that turbo, and check the turbine side for coking and free vane movement.
Establish why it failedBefore quoting we look at oil condition and level, the feed and drain lines, the crankcase breather and the air filter housing. Skipping this question is how people end up buying two turbos.
Written quote and optionsWe price a new OE-equivalent unit alongside a properly remanufactured one, explain the difference in warranty and build, and include the parts that must go with it rather than leaving them as extras.
Remove and decontaminateThe turbo comes off with its manifold or downpipe fixings. We renew or prove the oil feed and drain lines, flush oil out of the intercooler and boost pipework, and inspect the catalyst or particulate filter for debris.
Fit the replacementNew gaskets, nuts and studs go in wherever the originals have corroded, the bearing housing is primed with oil by hand so it is wet before first start, and a variable geometry actuator is calibrated to the new unit where the system needs it.
Fresh oil and a careful first runNew oil and filter go in, the engine is cranked without firing where the design allows so pressure builds, then idled gently and watched for leaks and smoke rather than revved.
Road test and rescanWe road test under full load, confirm actual boost now follows the requested figure, clear and recheck the codes, and force a regeneration if the particulate filter calls for one.

Turbochargers and parts we fit

We fit new turbochargers from the makers who supply the car industry, such as Garrett, BorgWarner, IHI and Mitsubishi, or a properly remanufactured unit rebuilt with new bearings and seals and balanced on a machine. Unbranded rebuilds are a false economy on a part spinning this fast. Every job includes a renewed or proven oil feed line, new gaskets and fixings, a fresh air filter, and oil and filter to your engine's specification.

New or remanufactured turbocharger matched to your engine code
Oil feed pipe and banjo bolts renewed rather than reused
Manifold, downpipe and oil drain gaskets with new nuts and studs
Fresh oil of the correct specification, with a new oil filter
New air filter, plus any split intake or boost hoses found
Electronic actuator calibration where the turbo uses one

How long it takes

4–8 hours

On many four-cylinder diesels the unit is reachable in half a day. Where it sits between the engine and the bulkhead, or the subframe has to come down, it becomes a full day or more, and seized manifold studs can add time nobody can predict precisely. Plan to leave the vehicle with us.

What’s included

Boost logging and actuator testing before any part is ordered
Smoke test of the intake and boost pipework
Shaft play measured against the manufacturer's limit
Turbocharger fitted with renewed oil feed and new gaskets
Oil, oil filter and air filter changed as part of the job
Road test, rescan and 3-month workmanship warranty

Worth knowing

What people get wrong about turbo replacement

Fitting a turbo without cleaning the intercooler

Oil left pooled in the intercooler and pipes is drawn straight into the new unit and the engine. On a diesel, enough of it can let the engine run on unburnt oil with the key off.

Blaming the turbo for every loss of power

Underboost faults come from hoses, sensors, EGR valves and blocked filters at least as often as from turbochargers. The cheap checks take about an hour and frequently save hundreds.

Stretching oil changes because the mileage is low

Time matters as much as distance. Oil that has sheared or filled with soot stops protecting a bearing spinning well past a hundred thousand revolutions a minute, however few miles the car has covered.

Buying purely on the price of the unit

A rebuild that has never been balanced will work its shaft against the bearings from the first drive. Paying the fitting labour twice costs far more than the difference between the two parts.

Instant quote

Price your turbo replacement now

Enter your reg and we’ll look up your car, then price the job from our own labour rates and the book time for your model. Nothing is booked until you say so, and the written quote comes before any work.

Free, about 30 seconds, no sign-up
Parts, labour and VAT included
3-month workmanship warranty
Collection and delivery across South London

“It’s rare to find a garage you can truly trust. Fair price, brilliant customer service.”Thinushan K. · ★★★★★ Google

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Questions

Turbo Replacement: your questions answered

Can I wait at the garage while it is done?

No. Even a straightforward turbo takes most of a working day, and corroded fixings can extend that. Most people drop the vehicle off in the morning. We can collect locally instead, and a courtesy car is sometimes available, so mention it when you book.

What warranty comes with the turbocharger itself?

Our labour carries the 3-month workmanship warranty. The unit carries its manufacturer's or remanufacturer's own warranty, which varies between suppliers and generally requires evidence that the oil was changed when it was fitted. We tell you which terms apply before you agree to anything.

Does the written quote include the oil and filters?

Yes. Oil, oil filter, air filter and the oil feed line are part of the job rather than optional extras, since both the survival of the turbo and its supplier warranty depend on them. Anything discovered during the work, such as a sheared stud, is phoned through before it is done.

Can I supply my own turbo and just pay for fitting?

We would rather you did not, and we cannot stand behind a part we have not supplied or a failure that part causes. If you have already bought one, bring it in and we will talk through honestly what we can and cannot warrant before you commit to the labour.

Can a turbo be repaired rather than replaced?

Sometimes. A vane mechanism seized with carbon can occasionally be freed and cleaned, and on many turbos the electronic actuator is a separate part, although it has to be calibrated to the unit afterwards. Once the shaft has play or a blade is damaged, the balance and bearings are beyond saving and replacement is the only sound answer.

Will a new turbo cure my oil consumption?

Only if the turbo is where the oil is actually going. We check the intake tract, breather system and exhaust before deciding, because a blocked crankcase breather moves oil through the engine in much the same way and costs a fraction to put right.

Does a remap destroy turbos?

A sensible map kept inside the compressor's flow range does not. Chasing power beyond what the turbo was designed to deliver makes it spin faster and hotter than intended, which shortens bearing life and raises exhaust temperatures. If an existing map looks like part of the story, we will say so.

Will I need a new particulate filter or catalyst too?

Not automatically. We inspect the exhaust for debris and measure back pressure once the new turbo is on. A filter loaded with oil ash after a long-running seal leak often cannot be brought back by regeneration, and we show you the readings rather than guess.

How do I make the new one last?

Change the oil on time with the right specification, let the engine idle for half a minute after a hard run before switching off, and drive gently until the oil is warm. On a diesel used for short journeys, a regular longer run keeps the vane mechanism moving freely.

Turbo Replacement near you

Drivers come to the Hackbridge workshop for turbo replacement from across South London. Pick your area to see how to reach us and what else we do locally:

Beddington~6 min away Carshalton~5 min away Cheam~12 min away Coulsdon~17 min away Croydon~15 min away Mitcham~8 min away Morden~12 min away Norbury~18 min away Purley~15 min away Rosehill~9 min away Streatham~20 min away Sutton~10 min away Thornton Heath~15 min away Tooting~18 min away Wallington~6 min away Wimbledon~20 min away Worcester Park~20 min away

Related work we do

Engine DiagnosticsFrom £122 · 1–2 hoursA proper diagnosis of warning lights, running faults and electrical problems, not just a code read.DPF CleaningFrom £250 · 2–4 hoursDiagnosis and cleaning of blocked diesel particulate filters, including forced regeneration with diagnostic equipment.Exhaust RepairsFrom £205 · 1–3 hoursRepair and replacement of exhaust systems from the manifold back, including flexi pipes, centre and rear silencers, catalytic converters, hangers and lambda sensors.ECU RemappingFrom £220 · 2–4 hoursStage 1 and Stage 2 ECU remaps for turbocharged petrol and diesel engines, carried out after a health check so the car is fit for the extra power.Car ServicingFrom £155 · 1–4 hoursInterim, full and major servicing for all makes, carried out to the manufacturer's schedule with the correct specification oil.MOT TestingFrom £50 · 45–60 minutesClass 4 MOT testing for cars and light vans at a flat £50, under the DVSA maximum fee of £54.85, with nothing added for booking or admin.