Market: Europe
Model: Golf 1.5 eTSI
Engine: 1.5 TSI / EA211 family
Transmission: 7-speed DSG (DQ200 in cited technical material)
Evidence scope: Volkswagen 2020 Golf eTSI technical presentation
Model
Volkswagen Golf
Golf Mk8 eTSI example application and Volkswagen-published 48 V powertrain architecture. Powertrain data is limited to the cited Golf eTSI application and is not generalized across all Golf generations.
What concrete information can you get from this page?
Verified application example: Europe · Golf 1.5 eTSI · 1.5 TSI / EA211 family · 7-speed DSG (DQ200 in cited technical material)
VERIFIED FACTModel / system fact
The Golf eTSI family used 1.0- and 1.5-litre EA211 TSI engines with a 48 V mild-hybrid system.
FAULT SEPARATIONWhen a symptom appears
For start/stop or 48 V warnings, verify the 12 V system and DC/DC supply integrity first, then separate 48 V SOC/temperature from BSG command-versus-response behavior.
FIRST MEASUREMENTBefore replacing parts
Record 12 V and available 48 V data in key-off and running conditions using the manufacturer procedure; do not open 48 V circuitry without the required isolation procedure.
Primary source: Volkswagen Golf eTSI – 48 V mild hybrid in detail
Vehicle Identity and Application Matching
RELATED SYSTEMS AND CODES
Technical topics in the same fault chain
Passenger-car technical verification chain
This chain does not assume an exact engine or transmission code. Verify vehicle, build period, market and ECU/TCU identity before moving into technical atlases.
- Engine/transmission identity
- DTC + freeze-frame
- Fuel/air/ignition
- Electronics/CAN
- ADAS/EV when applicable
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Verified model-variant application graph
No exact model-variant binding is available in source data yet. The system does not infer variants from similar names.
Next technical research for this vehicle class
Model technical depth plan
This plan moves a model page from catalog identity to diagnosis and service decisions. Exact values are used only when verified for the specific application.
Use manufacturer service information and verified vehicle identity for exact OEM procedures, values and part applications.
6-step technical decision tree
- Verify identity
- Preserve first-event data
- Compare command and feedback
- Confirm with physical measurement
- Isolate root cause
- Retest under the same condition after repair
OEM EVIDENCE DOSSIER
Verified technical facts and application boundary
- The Golf eTSI family used 1.0- and 1.5-litre EA211 TSI engines with a 48 V mild-hybrid system. [S1]
- Volkswagen describes a 7-speed DSG dual-clutch transmission as standard for Golf eTSI and names DQ200 in the published technical explanation. [S1]
- The 48 V system uses a belt-driven starter-alternator and a 48 V lithium-ion battery, supporting recuperation and engine-off coasting. [S2]
Verified application matches
The matches below are published only within the stated market, model-year and evidence scope. Fitment is not extrapolated to uncited variants.
System architecture and component relationships
- Split diagnosis into 12 V supply, 48 V battery/BSG, engine ECU and DSG control layers; one low-voltage event can create network faults across several modules.
- On the 1.5 TSI side correlate airflow, boost/MAP, fuel trims and ignition; on the 48 V side correlate battery state of charge, BSG torque request and DC/DC behavior.
- For DSG complaints, capture engine torque request, selected gear, input/output speeds and clutch state together.
DTC / SPN-FMI / symptom discrimination map
- For start/stop or 48 V warnings, verify the 12 V system and DC/DC supply integrity first, then separate 48 V SOC/temperature from BSG command-versus-response behavior.
- For low power, record boost target/actual, fuel trims, misfire counters and 48 V torque support at the same load point so engine-side and hybrid-assist faults are not mixed.
- For shift complaints, time-correlate DSG ratio/clutch evidence with engine torque-reduction commands.
Measurement and diagnostic strategy
- Record 12 V and available 48 V data in key-off and running conditions using the manufacturer procedure; do not open 48 V circuitry without the required isolation procedure.
- Synchronize engine and DSG logs at the same road load rather than diagnosing from one idle snapshot.
- After repair, reproduce comparable SOC, temperature and load and verify start/stop, BSG assistance and DSG behavior together.
Exact pinouts, torque values, pressure thresholds or service limits are published only when explicitly verified by the applicable OEM service source.
Evidence provenance and primary sources
- Volkswagen Golf eTSI – 48 V mild hybrid in detail · OEM-primary · 2026-08-15
- Volkswagen – The new Golf hybrid models · OEM-primary · 2026-08-15
RELATED TECHNICAL TOPICS
Topics in the same system and fault chain
Technical Sources and Verification
How to verify the technical identity
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Sources & freshness
Sources & freshness
Exact technical values, prices and failure rates are not invented without verified vehicle/manufacturer evidence.