1.5 TSI eHybrid / iV (plug-in)

2024–2026 · hybrid · 1498cc · 204hp

Engine codes: DUCA, DUCB, EANB

Maint. Sensitive

Reliability, common problems and owner reviews for the Volkswagen Passat B9 1.5 TSI eHybrid / iV (plug-in). Check this before you buy used.

On the new Tiguan, Tayron, Passat, Golf 8.5, Kodiaq and Superb the plug-in is a belt-driven 1.5 TSI plus a motor in a six-speed dual-clutch. System output is 204 hp (DUCB) or 272 hp (DUCA); the petrol tune differs, the motor does not. The Cupra Terramar eHybrid 204 is this DUCB. A Terramar 2.0 petrol at the same 204 hp is not this row. The complaint that fills a 156-reply Motor-Talk thread, from April 2025 to September 2026, is not a dead mechatronics unit. It is a single hard jerk in the first 300 metres, around 30 km/h, on a light throttle in E-mode, usually once per trip. Owners of 2025 Tiguans, a November 2024 Passat 204 hp and a Tayron describe the same hit. Several can force it about 60–65 seconds after start, as the passenger-airbag lamp in the mirror goes out. Workshops find no fault code. One owner stopped it by switching the emergency-braking aid off and back on — the car turns that aid on again at the next start, and he read the jerk as that system grabbing the brakes for a fraction of a second. In March 2026 another owner was told VW had an update, which the workshop called PV5, and the jerk did not come back. One Tiguan had already received a new DSG at 7,000 km for something else, and the jerk appeared only after that new box, so a worn clutch does not explain it. The older Golf GTE and Tiguan eHybrid DQ400e mechatronics and seal failures are a previous gearbox generation. Do not price this jerk as that repair.

Same engine, other cars

This is the same physical engine (DUCA) sold under different names across brands. Reliability is broadly shared — cross-check these:

Known Issues

One hard jerk in the first 300 metres of E-moderecurring

Motor-Talk thread t8193193. Tiguan 3 eHybrid owners, including cars delivered new in 2025, get a blow through the drivetrain at about 30 km/h on a light pedal, as if it grabbed a lower gear and dropped it again. It is repeatable for some people every trip, about a minute after start, and it stores nothing. A Passat eHybrid 204 hp from November 2024 and a Tayron eHybrid do the same. One Nuremberg owner watched the front-assist symbol flash and cleared the jerk for a week by toggling that aid, which the car switches back on by itself. Another was told on 20 March 2026 that an update (workshop name PV5) describes the jerk up to 30 km/h; after that update he could not provoke it. A third car jerked only after a replacement DSG. Treat it as a coordination fault with a software fix, unless the workshop has a code that says otherwise.

Fix / Workaround: From cold, drive the first minute in E-mode below 50 km/h and lift and squeeze the pedal. Ask whether the March 2026 update, or whatever superseded it, is on the car. No stored fault is what the thread expects. A quote for a new mechatronics, with no code, is not what these owners were eventually given.

Typically appears after: 1,000 km

The workshop will not see a codeminor

Across the thread the dealers reproduce it or they do not, and the scan is empty, so the car comes back with 'no fault found'. One owner had the jerk filmed and sent to the factory with the same result until the later update. Someone whose mechatronics was changed for a different fault also lost the jerk, and he could not say whether software was loaded with the part. That single coincidence is not a reason to buy a gearbox. The older plug-in DQ400e (torn mesh, mechatronics, input-shaft seal) is the Golf GTE and the previous Tiguan eHybrid. This thread's cars are the new six-speed hybrid box, and the symptom is one hit per trip from new.

Fix / Workaround: Take the video. Ask for the software level by name. Decline a gearbox if the only evidence is this jerk and an empty scan.

Typically appears after: 1,000 km

The 1.5 is still a belt engine, and this thread is not about the beltminor

The petrol half is the EA211 evo 1.5, belt-driven, 150 hp in the 204 hp system car and 177 hp in the 272 hp car. Nothing in the Motor-Talk jerk thread is a snapped belt, a carboned intake or a failed injector. Those remain ordinary 1.5 questions on a high-mileage car. They are not the reason a 2025 Tiguan kicks at 30 km/h.

Fix / Workaround: Belt interval on the service book once the car is old enough. Do not let a seller fold the jerk into a '1.5 TSI problems' discount, or the other way round.

Typically appears after: 120,000 km

Year Cutoffs

2026: Before — 2024 and 2025 deliveries in the thread jerk from new. The update owners were offered is dated March 2026. A car sold before that, without the update on paper, still has the open question.. After — After the update one owner could no longer provoke the jerk. Later cars still want the same one-minute E-mode test, because the thread was still being posted into September 2026..

Mileage Thresholds

After 5,000 km: The jerk is a from-new behaviour, not a worn box. Test it on the drive, including a car with delivery mileage.

After 120,000 km: Belt window on the 1.5. The hybrid jerk is decided long before that.

Pre-Purchase Checklist

☐One minute from a cold start, E-mode, under 50 km/h, light throttle — one jerk is the thread
☐Software level, including the March 2026 update if the car is older than that
☐No agreement to a mechatronics replacement while the scan is empty
☐204 hp is DUCB; 272 hp is DUCA — same jerk reports on both
☐Previous-generation GTE gearbox failures are not this car's invoice
☐Cam-belt history only starts to matter once the kilometres are there

Frequently asked questions

Is the Volkswagen Passat B9 1.5 TSI eHybrid / iV (plug-in) reliable?

Maint. Sensitive — On the new Tiguan, Tayron, Passat, Golf 8.5, Kodiaq and Superb the plug-in is a belt-driven 1.5 TSI plus a motor in a six-speed dual-clutch. System output is 204 hp (DUCB) or 272 hp (DUCA); the petrol tune differs, the motor does not. The Cupra Terramar eHybrid 204 is this DUCB. A Terramar 2.0 petrol at the same 204 hp is not this row. The complaint that fills a 156-reply Motor-Talk thread, from April 2025 to September 2026, is not a dead mechatronics unit. It is a single hard jerk in the first 300 metres, around 30 km/h, on a light throttle in E-mode, usually once per trip. Owners of 2025 Tiguans, a November 2024 Passat 204 hp and a Tayron describe the same hit. Several can force it about 60–65 seconds after start, as the passenger-airbag lamp in the mirror goes out. Workshops find no fault code. One owner stopped it by switching the emergency-braking aid off and back on — the car turns that aid on again at the next start, and he read the jerk as that system grabbing the brakes for a fraction of a second. In March 2026 another owner was told VW had an update, which the workshop called PV5, and the jerk did not come back. One Tiguan had already received a new DSG at 7,000 km for something else, and the jerk appeared only after that new box, so a worn clutch does not explain it. The older Golf GTE and Tiguan eHybrid DQ400e mechatronics and seal failures are a previous gearbox generation. Do not price this jerk as that repair.

What are the common problems and reviews for the Volkswagen Passat B9 1.5 TSI eHybrid / iV (plug-in)?

The most commonly reported problems: One hard jerk in the first 300 metres of E-mode, The workshop will not see a code, The 1.5 is still a belt engine, and this thread is not about the belt.

Is a used Volkswagen Passat B9 1.5 TSI eHybrid / iV (plug-in) worth buying?

Fine if serviced correctly — but it punishes neglect hard. History and the right consumables matter.