DETROIT (Reuters) - Volkswagen's VOWG_p.DE core autos division increased vehicle sales to a record 6.23 million cars last year, as rising demand for VW brand models in the Americas and the key Chinese market offset a decline in western Europe.

Although the emissions test-cheating scandal of September 2015 has cost the German group billions of euros in fines and penalties, it does not seem to have caused major damage to the carmaker’s popularity with consumers.

Deliveries rose 4.2 percent in 2017 to 6.23 million Volkswagen (VW) brand cars, the automaker said on Sunday at the Detroit auto show, helped by an expanding line-up of sport-utility vehicles including the all-new Atlas and Teramont models.

The carmaker expects to keep growing volume this year.

“Based on economic forecasts and our plans for new models, there is no reason to expect that 2018 should turn worse than 2017,” VW brand sales chief Juergen Stackmann said on Sunday at the Detroit auto show, declining to be more specific.

Higher deliveries at the mass-market brand, accounting for almost 60 percent of VW group sales, may have helped the Wolfsburg-based company beat Toyota 7203.T for a second year in the global sales race. VW's premium divisions, Audi NSUG.DE and Porsche, had already posted record 2017 deliveries last week.

Toyota said last month it expected to sell 10.35 million cars worldwide in 2017 across its Toyota, Lexus, Daihatsu and Hino brands, up 2 percent from 2016, and 10.5 million this year. VW is due to announce 2017 deliveries for the group as a whole on Jan. 17.

In China, Volkswagen’s largest market, accounting for about half the core brand’s deliveries, sales rose 5.9 percent last year to 3.18 million cars. In the United States, they were up 5.2 percent to 339,700 cars.

Deliveries dropped 2.5 percent to 1.43 million cars in the higher-margin, but diesel-heavy western European market as customers reacted to a backlash against diesel technology in the wake of Volkswagen’s emissions trickery.

Sales of the VW brand, which is pushing a turnaround plan to revive profits, may continue to outpace rivals, according to industry forecaster IHS Markit.

Deliveries of VW passenger cars and light commercial vehicles could increase 14.6 percent to 7.75 million units by 2025 from 6.76 million last year, IHS data indicated.

That compares with gains of 11.6 percent to 9.65 million at Toyota and 3.7 percent to 5.84 million at Ford F.N.