NEW DELHI: Car sales continued to remain under pressure due to an uncertain economy and high interest rates as companies reported weak numbers ahead of the crucial festive season that begins later this week. Only companies with new models like Honda and Ford reported a double-digit growth in volumes as others like Hyundai, Mahindra, Toyota and Tata Motors reported a year-on-year decline in volumes in September, while market leader Maruti managed a 2% growth.