Car Model Guide/ Ford/ Mondeo/ Mk4 Estate/ 1.8 TDCi

1.8 TDCi QYBA

The entry diesel, and a belt-driven engine whose fuel pump is lubricated by the fuel itself. So a bad tank or a worn pump can send debris right through the injectors, which is the expensive version of this engine's story.

Overview

The 1.8 TDCi is the QYBA diesel version of the Ford Mondeo wagon (Mk4 Estate), sold 2007–2012 with 125 PS and manual_6. Demands diligence at level 3. The fuel pump is lubricated by the fuel itself, so pump wear can send debris through the injectors and turn a small fault into a fuel-system rebuild. 13 failure modes are recorded against its engine, gearbox, chassis and shared components. Prices on this page are illustrative placeholders rather than a sourced market sample. See the methodology for how the bands are derived.

Ford Mondeo wagon (Mk4 Estate) · photo Ford Mondeo Mk IV estate 1999cc first registered UK November 2010 by Charles01 · CC BY-SA 3.0 · Wikimedia Commons

Power125 PS

Torque320 Nm

Years2007–2012

Fueldiesel

DriveFWD

EnginesQYBA

Biggest risks

Ranked by probability × repair cost. 13 recorded in total.

52Demands diligence

DPF clogging and forced regeneration€250–€1,800partly checkable
Front control arm bushing wear€300–€700checkable
Fuel pump wear and injector contamination€800–€3,000partly checkable

Risk level −22 · Likely spend vs price −26 · all issues →

System by system9 systems reviewed · 2 with no recurring fault reported

Engine✓ clearNo recurring fault reported for this system on this engine.

Fuel systemwatchFuel pump wear and injector contamination, €800–€3,000.

Intake & air✓ clearNo recurring fault reported for this system on this engine.

CoolingwatchCoolant expansion tank cracking, €120–€250.

Emissions⚠ attentionDPF clogging and forced regeneration, €250–€1,800.+1 more in this system

TransmissionwatchxDrive transfer case actuator failure, €600–€1,200.

ElectricswatchFootwell module (FRM) failure, €150–€700.+2 more in this system

Suspension & brakeswatchFront control arm bushing wear, €300–€700.+3 more in this system

Body & interiorwatchCorrosion at the rear subframe and arch seams, €300–€2,000.

Pre-facelift or facelift, this engine spans both

The same badge either side of the changeover. Bands are split at the facelift year from the generation record.

Phase	Years	Low	Average	High	Good buy	What differs
pre Pre-facelift	2007–2009	€1,350	€2,200	€3,700	€1,800	The specification the car launched with.
LCI Facelift (LCI)	2010–2012	€1,450	€2,400	€4,050	€1,950	New nose, lights and interior; Revised 2.2 TDCi; 2.0 EcoBoost petrol introduced

Known issues, ranked by expected cost

Faults recorded against this engine, its components and its chassis, ranked by likelihood × repair cost. Costs are indicative ranges with a stated labour basis.

DPF clogging and forced regenerationDPF€250–€1,800

Warning light, limp mode, oil level rising above the maximum mark from fuel dilution. The filter needs sustained hot running to regenerate. A car used for short urban trips never completes a regeneration cycle.

Check: Read the DPF soot load and the distance since the last regeneration on a scan tool, and check the engine oil level and smell it for diesel. Ask what the car was used for. A short-trip city diesel is the wrong car regardless of mileage.

EmissionscommonPartly detectableevidence: documented120–250k km

Front control arm bushing wearE9x chassis€300–€700

Knocking over bad surfaces, vague or wandering steering, uneven front tyre wear, steering shimmy under braking. The front lower arm bushings are a known wear item on this chassis and go well before the ball joints.

Check: Drive over a rough road at low speed with the windows down and listen. Check the inside edges of the front tyres for feathering.

SuspensionuniversalDetectable at viewingevidence: documented80–150k km

Fuel pump wear and injector contaminationQYBA 1.8 TDCi€800–€3,000

Hard starting, a loss of power under load, and in the worst case a car that stops and won't restart. The high-pressure pump is lubricated by the diesel passing through it, so wear inside the pump can shed fine metal into the fuel system and damage the injectors. Poor fuel and neglected filter changes both accelerate it, and once debris is circulating the repair covers the whole system.

Check: Ask for the fuel filter record and any fuel-system work, then scan for fuel-pressure faults. A car with no filter history should be priced as a risk.

FueloccasionalPartly detectableevidence: documented120–220k km

Run-flat tyres and kerbed or cracked wheelsE9x chassis€150–€900

Harsh ride, vibration at speed, slow punctures. Stiff-sidewall run-flats transmit impacts straight into the rim, and these alloys crack rather than bend.

Check: Inspect the inner rim edge of every wheel for cracks and hairline splits, not just the face for kerbing. Budget for a set of conventional tyres; most owners switch and the ride improves markedly.

SuspensioncommonDetectable at viewingevidence: documented

Corrosion at the rear subframe and arch seamsE9x chassis€300–€2,000

Bubbling at the rear arch lip, scaling on subframe mounting points and rear suspension components. Age plus road salt. This generation isn't a notorious rotter, but nothing from 2005–2013 is immune in a salted market.

Check: Put it on a lift and look at the rear subframe mounting points and the arch lips from behind. Largely a non-issue on cars from southern Europe, a real one on northern and Baltic cars.

Body & corrosionoccasionalDetectable at viewingevidence: documented

Rear suspension bush and subframe wearMondeo platform€250–€700

A knock from the rear over bumps, vague handling, and uneven tyre wear at the back. The rear multi-link bushes wear, and cars that carried weight or covered high mileage go first. Corrosion of the subframe is a second issue in salted climates.

Check: On a ramp, lever the rear bushes for splitting and look at the subframe for corrosion, then listen for a knock over rough roads.

SuspensioncommonPartly detectableevidence: documented130–230k km

Footwell module (FRM) failureE9x chassis€150–€700

Headlights, indicators, windows, wipers and central locking stop working at once, usually right after a battery change or a jump start. The module's memory corrupts when supply voltage dips. It is the single most common electrical failure on this generation.

Check: Test every window, both mirrors, the wipers, all exterior lights and the central locking before you drive. If any cluster of these is dead, this is why.

ElectricalcommonDetectable at viewingevidence: documented

Rear shock mount wearE9x chassis€250–€500

Knock from the rear over speed bumps, a hollow thump from the boot area. The rubber mounts perish. On hard-used cars the mount can crack the surrounding turret metal, which is a far bigger job.

Check: Lift the boot floor and look at the top of the shock towers for cracking or a lifted mount. Listen for a knock over bumps.

SuspensioncommonDetectable at viewingevidence: documented100–180k km

Ranked by probability × repair cost, not by how loudly a failure is discussed. Inherited from the engine, gearbox, chassis and shared components, each written once. All 13 issues in full →

Mileage and servicing

What the odometer does and doesn't tell you here, plus the service items whose neglect causes the expensive failures above.

Ask where it was fuelled and whether the filter has been changed on time. Those two things predict this engine's health better than mileage.

Service item	Interval	Cost
Fuel filter Filter neglect is what turns a pump fault into a rebuild	on schedule, never late	€60–120
Timing belt A belt engine, so an overrun is terminal	per schedule	€400–650
Dual-mass flywheel A common wear item on these diesels	listen for rattle at idle	€700–1,200

What to pay

What this engine sells for, against the median of every engine in the chassis. All figures are illustrative placeholders. See the basis chips.

median €2.3k

€1.4k€1.8k€4.0k

Cheapfind the reasonGood buyif it checks outFairnormal moneyOverpricedneeds justifying

Asking price (€)Mileage (km)

Enter an asking price to get a verdict against this variant's band: cheap, fair, good buy or overpriced.

United States vs Europe

1 EUR = 1.08 USD · 2026-07

🇪🇺 Europe · EUR€1,800band €1,350–€4,050

🇺🇸 United StatesNot sold1.8 TDCi QYBA was never a US-market car

What that meansNo US band exists to compare. Any car you find there's a private import, parts and specialist knowledge are thinner, and the price says more about import cost than about the market.

US figures are the EU band converted at a stated rate. No US market differential is modelled: we hold no sourced US asking prices, and inventing one would be worse than saying so. What the comparison does show for real is availability. Most of this range was never sold in the US.

ModelFord Mondeo 1.8 TDCi
ChassisMk4 Estate
EngineQYBA
Years2007–2012
MarketCentral EU
Windowrolling 12 months to 2026-07

Good buy at or under the marker · Median asking price · bar spans the 10th to 90th percentile · dashed line is the mk4 estate median, all 4 engines

Good buy isn't the same as cheapest. The good-buy figure assumes the known failure items are either done with receipts or verifiably not yet due. Full breakdown by facelift phase →

Buyer notes

Our judgement, kept separate from the records it's built on.

Our read, not a record

The 1.8 TDCi is the entry diesel and it's perfectly adequate in a car this size, with enough torque to make it easy going. The thing to understand is the fuel system: the high-pressure pump relies on diesel for its own lubrication, so a worn pump can shed metal into the injectors and turn a manageable repair into a very expensive one. Regular filter changes and decent fuel are the whole defence. Buy one with a documented fuel filter record and it's a cheap and useful car.

Everything above this line comes from the issue and specification records. This paragraph is our judgement on top of them. See how we reach it.

Full specification

Manufacturer figures for this engine and body, as recorded in the variant and engine data.

Engine code	QYBA 1.8 TDCi
Configuration	I4, turbocharged · 1753 cc
Fuel / injection	diesel · common rail
Model years	2007–2012
Facelift phase	Sold either side of the 2010 facelift, 2007–2009 pre, 2010–2012 LCI
Power / torque	125 PS · 320 Nm
Transmissions	6-speed manual
Gearbox families	Ford MMT6 / Durashift six-speed manual
Drivetrain	FWD
Economy (real-world)	5.2–6.5 l/100 km mixed
Markets	EU

1.8 TDCi QYBA

Overview

Pre-facelift or facelift, this engine spans both

Known issues, ranked by expected cost

Pre-purchase inspection

1Static checksEngine off, ideally on a lift.

2On the driveInclude low-speed manoeuvring, not just an open road.

3PaperworkOn these cars the folder is most of the value.

4OBD scanMandatory. A seller who refuses a scan has answered the question.