The data indicates that virtually all Vauxhall Zafira Tourer models (2011-17) with the specified description are powered by a 1.8-liter engine, making up 100% of the sample. Additionally, petrol is overwhelmingly the primary fuel type, used in 99.6% of the vehicles, with a small fraction (0.4%) employing Gas Bi-fuel systems. This suggests that the standard configuration for this model range is a 1.8L petrol engine, with very limited use of alternative fuel options.