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The spark-ignition petrol engines listed below operate on the four-stroke cycle, and unless stated otherwise, use a wet sump lubrication system, and are water-cooled.[1]
Since the Volkswagen Group is German, official internal combustion engine performance ratings are published using the International System of Units (commonly abbreviated "SI"), a modern form of the metric system of figures. Motor vehicle engines will have been tested by a Deutsches Institut für Normung (DIN) accredited testing facility, to either the original 80/1269/EEC, or the later 1999/99/EC standards.[citation needed] The standard initial measuring unit for establishing the rated motive power output is the kilowatt (kW);[citation needed] and in their official literature, the power rating may be published in either the kW, or the metric horsepower (often abbreviated "PS" for the German word Pferdestärke), or both, and may also include conversions to imperial units such as the horsepower (hp) or brake horsepower (bhp). (Conversions: one PS = 735.5 watts (W); ˜ 0.98632 hp (SAE)). In case of conflict, the metric power figure of kilowatts (kW) will be stated as the primary figure of reference. For the turning force generated by the engine, the Newton metre (Nm) will be the reference figure of torque. Furthermore, in accordance with European automotive traditions, engines shall be listed in the following ascending order of preference:[citation needed]
- Number of cylinders,
- Engine displacement (in litres),
- Engine configuration, and
- Rated motive power output (in kilowatts).
The petrol engines which Volkswagen Group previously manufactured and installed are in the list of discontinued Volkswagen Group petrol engines article.
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- ^ ETKA official factory data[clarification needed]