The number, announced today, is likely to put the Japanese automaker close to last year's No. 1, Volkswagen AG of Germany.
Volkswagen sold 10.3 million vehicles last year, putting it ahead of Toyota and U.S. automaker General Motors.
Toyota, which sold nearly 10.2 million vehicles worldwide last year, said it expects to sell 10.495 million in 2018.
Nissan-Renault, the alliance between Japan's Nissan Motor Co. and Renault SA of France, which reported solid sales in the first half of this year, has run into some sales problems after inspections irregularities were reported at its Japanese plants. Nissan has been doing massive recalls and the scandal has dented sales.
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Toyota executives repeatedly say they are not seeking to be No. 1 in global vehicles sales and that chasing numbers could even be unhealthy.
But competition is intense not only in major markets like the US and Europe but in relatively new markets like China and India, where growth is expected to be stupendous in coming years.
Toyota reported that sales grew 10 per cent in Japan, while it grew 1 per cent abroad, this year.
The maker of the Camry sedan, Prius hybrid and Lexus luxury models, was not as optimistic about its sales in Japan next year, projecting a 5 per cent decline, while it sees its sales outside Japan would continue to grow.