Almost every third person (27.7%) has eaten plant-based foods for more than six years, data showed, with animal welfare (65.3%), environmental and climate protection (54.2%) and health (31.3%) cited as the top reasons for turning to plant-based products.
Milk alternatives, meat substitutes and vegan sausages are the most sought after products, according to the survey.
Around 84.9% respondents said they find it easier to eat vegan.
Robert Pudelko, head of sustainability purchasing at Kaufland Germany, explained, "For us, people who eat a vegan diet are an important and growing customer group. With our large vegan range, we make it easier for them to choose plant-based foods.
"Our own brand, K-take it veggie, also offers numerous substitute products, with which we support our customers in a vegan diet."
Currently, Kaufland offers up to 80 vegan SKUs under its K-take it veggie brand.
In addition, its assortment includes various branded vegan products, comprising more than 400 fruit and vegetable SKUs.
Like in other years, the company is supporting Veganuary, a worldwide campaign to encourage people to eat vegan in January.
The retailer has teamed up with nutritionist Dr Alexa Iwan and chef Verena Leister, to provide tips and inspiration on social media on how to embrace a vegan diet.
It has also added more than 300 vegan and vegetarian recipes to its website.