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Volkswagen VR6 specs: 3.6L (219.6 ci) 6-cylinder, 89 x 96.4 mm (3.5039 x 3.7953 in) bore and stroke, 11.4:1 compression. Rated 276-295 hp. DOHC.
The Volkswagen VR6 is undersquare — the 3.7953" stroke exceeds the 3.5039" bore by 7.7% — a layout that trades peak RPM for leverage and torque low in the range. The 3.7953" stroke puts mean piston speed at 4,000 ft/min around 6,300 RPM, which is where a production bottom end is generally considered at its limit. Each of the 6 cylinders displaces 36.6 ci (600 cc).
11.4:1 on aluminum heads is high enough that pump premium or better is normally required.
It is one of 5 engines in the VR6 family, the largest at 219.6 ci. 3 factory variants share these dimensions, rated from 276 to 295 hp. Factory fitments include the Volkswagen Touareg (later 3.6), Volkswagen Atlas, Porsche Cayenne (3.6 VR6) and 4 others.
| Displacement | 219.6 ci / 3.6 L |
|---|---|
| Bore | 3.5039" |
| Stroke | 3.7953" |
| Cylinders | 6 |
| Compression ratio | 11.4:1 |
| Bore/stroke ratio | 0.923 |
| Block material | cast iron |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 276–295 hp |
| Bore/stroke character | 0.923 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,795 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 36.6 ci |
| Static compression | 11.4:1 — high enough that pump premium or better is normally required |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| — | 276 hp | CBR, CDV |
| — | 280 hp | CMTA |
| — | 295 hp | CHNA |