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Toyota 1.4 D-4D engine: reliability and faults

Diesel · 1,364 cm³ · 75, 90 hp · 2002–2020

Buy with care
Reliability
3.5/5

3 known faults

Verdict

A small 1.4-litre four-cylinder diesel engine, fitted to the Toyota Yaris, Auris, Corolla, iQ, Verso-S and Urban Cruiser. It can burn a lot of oil, leading to engine failure in severe cases, and its EGR valve and particulate filter cope badly with short trips. A recall covered the intercooler on 2008-2014 models. Check the oil level and ask for the service history.

Years to favour or avoid

To favour
No year particularly to favour
To avoid
No year to avoid identified

Known faults

Excessive oil consumption, up to engine failure

Severity 3/3 · Serious

L'argus describes abnormal oil consumption (more than 0.5 l per 1,000 km) on the 1.4 D-4D until the end of production, with the engine needing replacement in severe cases; Caradisiac notes consumption of up to 2 litres per 1,000 km and, rarely, block failures around 100,000 km, with Toyota goodwill hard to obtain. Fiches-auto names it the most common problem on the 1.4 D-4D.

Versions
toyota-1-4-d4d
Onset
not documented
Repair
not documented

Clogged EGR valve and particulate filter

Severity 2/3 · Costly

The EGR valve clogs (rough idle, lack of performance), especially in town use; regular cleaning avoids replacing it. The particulate filter can block and make the oil level rise. This diesel is ill-suited to short trips.

Versions
toyota-1-4-d4d
Onset
not documented
Repair
not documented

Recall: intercooler, 2008-2014

Manufacturer recall

An October 2014 recall covers about 62,000 Toyota vehicles built between 2008 and 2014: a defect in the intercooler can let oil build up inside it, which can be very harmful to the engine. The work is free; check with the VIN.

Fixed free of charge by a dealer and not counted in the reliability score: ask for proof the work was done (invoice, or a VIN check at a dealer).

Versions
toyota-1-4-d4d
Onset
not documented
Repair
not documented

Models fitted

Maintain and diagnose this engine

Read fault codes

An OBD scanner plugged in under the steering wheel shows stored fault codes, even with warning lights off: useful during the test drive.

Parts and maintenance

Compare prices of car parts (timing, brakes, filters) to estimate the repairs to plan for.