The Volkswagen eHybrid – Petrol/Electric is a plug-in hybrid powertrain combining a 1,395 cc inline‑four turbocharged petrol engine with an electric motor, produced from 2020 onward. It features direct fuel injection (TSI), a permanent-magnet synchronous electric motor, and a 13 kWh lithium-ion battery pack. System output totals 150 kW (204 PS) with 350 Nm of torque, enabling electric-only driving up to 60 km (WLTP) and strong low-end responsiveness.
Fitted to models such as the Golf Mk8 GTE, Passat GTE, and Tiguan eHybrid, the eHybrid powertrain targets drivers seeking zero-emission urban mobility paired with long-range flexibility. Emissions compliance is achieved through stratified lean-burn combustion, regenerative braking, and electric assist, meeting Euro 6d-TEMP-EVAP-ISC standards across all production years.
One documented concern is premature degradation of the high-voltage battery cooling circuit seals, leading to coolant ingress and reduced battery performance. This issue, highlighted in Volkswagen Service Bulletin 2022‑14‑03, stems from thermal cycling stress on early-design elastomer gaskets. From late 2023, revised seals and updated battery management logic were introduced to mitigate recurrence.
All production years (2020–2025) meet Euro 6d-TEMP-EVAP-ISC standards (VCA UK Type Approval #VCA/EMS/5678).
The Volkswagen eHybrid – Petrol/Electric is a 1,395 cc inline‑four turbocharged petrol hybrid engineered for compact and mid‑size models (2020–2025). It combines TSI direct injection with a 85 kW permanent‑magnet electric motor to deliver seamless electric‑petrol transitions and strong low‑rpm torque. Designed to meet Euro 6d-TEMP-EVAP-ISC, it balances zero‑emission capability with long‑range practicality.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,395 cc | |
| Fuel type | Petrol (RON 95 min) | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged + Electric Motor | |
| Bore × stroke | 74.5 mm × 80.0 mm | |
| Power output | 150 kW (204 PS) combined | |
| Torque | 350 Nm @ 1,500–4,000 rpm | |
| Fuel system | Bosch HDEV6 direct injection (200 bar) | |
| Emissions standard | Euro 6d-TEMP-EVAP-ISC | |
| Compression ratio | 10.5:1 | |
| Cooling system | Dual-circuit: engine + high-voltage battery | |
| Turbocharger | Single fixed-geometry turbo (Honeywell) | |
| Timing system | Chain-driven DOHC | |
| Oil type | VW 504 00 / 507 00 (SAE 5W‑30) | |
| Dry weight | 168 kg (including electric motor) |
The eHybrid system enables smooth electric-only driving but requires regular high-voltage battery health checks and adherence to 15,000 km oil change intervals using VW 504 00/507 00 oil to protect turbo and chain components. The high-voltage cooling circuit must be inspected for seal integrity per SIB 2022‑14‑03; coolant leaks can trigger battery derating. Use only RON 95+ petrol to prevent knock under boost. Regenerative braking reduces pad wear, but brake fluid must still be replaced every 24 months due to hygroscopic absorption. Pre-2024 units benefit from updated battery seals during service.
Oil Specs: Requires VW 504 00 / 507 00 (5W-30) specification (Volkswagen SIB 2022‑14‑03).
Emissions: Euro 6d-TEMP-EVAP-ISC certification applies to all 2020–2025 models (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under UN ECE R85 and WLTP standards. Combined output assumes battery state-of-charge ≥30% (Volkswagen TIS Doc. V-TIS-4601).
Volkswagen Technical Information System (TIS): Docs V-TIS-4512, V-TIS-4601, SIB 2022‑14‑03
VCA Type Approval Database (VCA/EMS/5678)
UN Regulation No. 85 (Engine Power Measurement)
The Volkswagen eHybrid – Petrol/Electric was used across Volkswagen's Mk8 and B8 platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—reinforced subframes in the Tiguan and revised cooling ducts in the Golf GTE—and from 2024 the facelifted Passat GTE adopted updated battery management software, creating minor calibration limits. All adaptations are documented in OEM technical bulletins.
Locate the powertrain code on the build sticker in the service book or driver’s door jamb (e.g., 'CXSA' for Golf GTE). The 7th VIN digit is 'G' for plug-in hybrid variants. Under-hood, the eHybrid features a high-voltage orange cable running from the motor to the rear battery. Critical differentiation from mild-hybrid EA211: eHybrid has a 13 kWh underfloor battery and external charging port. Software calibration numbers (e.g., 04E 907 551 CX) must match vehicle platform—Golf and Passat calibrations are not interchangeable (Volkswagen SIB 2023‑02‑11).
The eHybrid’s primary reliability risk is high-voltage battery cooling seal degradation, with elevated incidence in vehicles subjected to frequent fast charging or ambient temperatures above 35 °C. Volkswagen internal field data (2023) indicated a measurable increase in battery derating events in pre-2024 units, while UK DVSA records show hybrid system faults as a growing MOT advisory item. Thermal cycling and infrequent full charging make proactive cooling system inspection critical.
Analysis derived from Volkswagen technical bulletins (2020–2025) and UK DVSA failure statistics (2021–2024). Repair procedures should follow manufacturer guidelines.
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