CAAC

Transporter T5·T5·2009–2015

"Changed oil pressure switch, oil pump and wet belt, conrod and main bearings, oil filter housing, vacuum pump — still didn't sort the oil pressure problem."

RISKY

58/ 100

"Oil pressure demons haunt high mileage units"

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Max HP

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Torque Nm

10,000

Oil interval km

Recalls

Known issues

Known Issues

Chronic Low Oil Pressure€1,500-4,000 · 150,000-350,000 kmCRITICAL

Multiple forum reports describe persistent low oil pressure warnings on high-mileage CAAC units that resist straightforward fixes. Owners have replaced oil pressure switches, oil pumps, wet timing belts, conrod and main bearings, and oil filter housings without fully resolving the fault. In some cases pressurising the system was required to diagnose the root cause. This suggests systemic internal wear or a design vulnerability rather than a single failed component.

Low oil pressure warning light at idle

Oil pressure alarm during normal driving

Pressure recovers temporarily when engine revs are raised

Alarm returns after component replacements

DIY: Hard

EGR Valve and Cooler Failure€400-1,200 · 100,000-200,000 kmHIGH

Forum evidence shows the CAAC engine suffers from EGR insufficient flow fault codes. Owners report the EGR valve and cooler have typically never been serviced by 100,000 km, leading to clogging and fault codes. The EGR cooler is also noted as a wear item requiring replacement alongside the valve.

EGR insufficient flow fault code in diagnostics

Rough idle or hesitation under light load

Increased smoke at startup

Engine management warning light

DIY: Moderate

Wet Timing Belt Wear€600-1,400 · 100,000-180,000 kmHIGH

The CAAC uses a wet timing belt running in oil. Forum data references the wet belt as a component replaced during oil pressure investigations, confirming it is a known service item on this engine. Failure of the wet belt can cause catastrophic engine damage.

No obvious external symptoms until failure

Metal particles in oil on drain

Timing-related misfires if belt skips

DIY: Hard

Vacuum Pump Failure€200-600 · 120,000-250,000 kmMODERATE

The vacuum pump is listed among components replaced during oil pressure fault diagnosis on the CAAC engine, indicating it is a known wear item. Vacuum pump failure can affect brake servo assistance and other vacuum-operated systems.

Increased brake pedal effort

Soft or spongy brake feel

Vacuum-related fault codes

DIY: Moderate

Buying Checklist

Verify full service history with documented wet timing belt replacement — if absent, budget for immediate replacement before purchase

Connect VCDS or OBD scanner and check for EGR fault codes and oil pressure-related fault history

Warm the engine fully and monitor oil pressure at idle — low pressure at warm idle is a serious red flag, walk away

Check for oil leaks around the oil filter housing and vacuum pump area at the rear of the engine

Inspect for signs of coolant contamination in the intake or white smoke at startup indicating EGR cooler failure

Ask specifically whether oil pump, conrod bearings, or main bearings have been replaced — units with these repairs may have underlying unresolved issues

Service Reality

Community oil interval10,000 km

Oil specificationVW 507.00 5W-30 fully synthetic

Est. ownership cost (2yr)€800-2,000 per year depending on mileage and condition, with potential for €2,000-5,000 major repairs if oil pressure or timing belt issues are neglected

Real mix fuel consumptionNo data

Also Found In

Volkswagen Transporter T6 (early 2016 models)Volkswagen Crafter (selected variants)

Buying Advice

The CAAC engine can deliver very high mileage when properly maintained, but the chronic low oil pressure issue documented extensively in owner forums is a serious concern that can resist even comprehensive repairs. Always verify oil pressure with a mechanical gauge before purchasing, as the fault can mask itself until catastrophic internal wear occurs. Budget for an immediate wet timing belt service if history is unclear, and factor in potential EGR and vacuum pump work at 100,000–150,000 km intervals. Only buy a well-documented example with full service history from a specialist-aware owner — a cheap example with unknown history is a high financial risk.