DETROIT: America's 'Big Three' auto manufacturers posted disappointing sales figures in June, with General Motors, Ford and the Chrysler Group all reporting year-on-year falls.

GM saw its monthly total decline by 21% versus June 2006, resulting both from reduced retail output and slackening trade with the rental-car industry. Car sales dipped by 19% and light trucks by 23% (over 85,000 vehicles overall).

According to Mark LaNeve, vp GM North American Sales, Service and Marketing: "Our retail performance for the month was also below the solid running rate we've experienced for the first half of the year, which we attribute to a soft industry and lower incentive spending than our competitors."

The decline was less substantial at Ford, where total sales were down 8.1% (nearly 22,000 vehicles), resulting mainly from a 25% drop in car sales, attributed by the company to a decline in fleet and rental trading.

By contrast, figures for trucks were up 2.9% and crossovers by 83%, and despite recording an overall decline, Ford did reclaim from Toyota the second place on the podium in terms of net sales.

Chrysler, on the other hand, saw the number of car purchases increase by 55%, though its overall numbers fell by 1.4% to a total of 183,347 units.

By contrast, Japanese carmakers prospered, with Toyota seeing sales rise year-on-year by 10%, Honda by 11% and Nissan by 23%.

Data sourced from Wall Street Journal Online. additional content by WARC staff