"There's nothing fundamentally wrong with it, but is that good enough nowadays? No, it's not," Toprak says.
The new Camry is due to arrive at US dealerships in early October.
Toyota has sold more than 15 million Camrys worldwide since it introduced the car in 1983 to compete with the Honda Accord. It quickly became a big seller in the US because of its reputation for reliability and good gas mileage.
The Camry outsold the Ford Taurus in 1997 and has been the best-selling car in America every year except for 2001, when it was eclipsed by the Accord. Even Toyota's embarrassing series of safety recalls last year and earthquake-related shortages this spring didn't knock it down from No 1.
Toyota's US sales chief Bob Carter says the company aims to keep things that way, in part by being aggressive on price.
Toyota has also tweaked the Camry's engines to get better fuel economy.
But it remains to be seen whether Toyota can draw back buyers who started shopping other brands after Toyota was hit by huge recalls that involved sticky accelerators and floor mats that trapped gas pedals. Customers also ran into shortages this summer after Japan's earthquake disrupted production.
Toyota's lead has been slipping the last four years. In the first seven months of 2007, the company sold more than 282,000 Camrys, trouncing what was then its closest competitor, the Honda Accord, by more than 62,000. Camry sales were more than double the Nissan Altima's, and more than three times those of the Ford Fusion, Chevrolet Malibu and Hyundai Sonata.
Now the Camry's top five rivals are within striking distance. The Altima was only 21,000 behind through July, and the Fusion just 23,000 back.
Toyota Motor Corp President Akio Toyoda visited the Georgetown, Kentucky, plant where the Camry is made for the US, underscoring the car's importance. Toyoda said he personally tested the new car until he was satisfied that it outperforms its competition.
"This car has become a symbol of Toyota's success," he said. "This is an opportunity to show the world again what Toyota is all about."
- AAP