Proton Holdings Bhd has invested more than RM18 billion in research and development (R&D) since its establishment 30 years ago, said its Chief Technical Officer Abdul Rashid Musa.

"Proton has managed to avoid monetary outflow beyond Malaysia, recording as much as RM200 billion from the sale of four million vehicles and contributed RM20 billion in taxes to the government through the sales and service tax," he told reporters at the 'Alami Proton Carnival 2015' media preview here, today.

He said Proton remained steadfast amid the challenges in the automotive industry through the years, underwent the liberalisation of the country’s economy, higher emission and carbon dioxide (Co2) standards as well as higher safety and regulatory requirements.

Additionally, he said the national car manufacturer had to adapt to changes in the sector, among others the emergence of original equipment manufacturers especially from China, adoption of high technological features and aggressive investment in R&D.

He said Proton was undeniably a good car, saying the country’s taxi industry mainly comprised Proton cars.

"The mileage of taxis is five to ten times more compared to ordinary usage and if the vehicle is not good, it won’t be able to withstand gruelling day-to-day use,” he said, adding the maintenance cost would also skyrocket if the brand was unreliable.

On the two-day Alami Proton Carnival which begins tomorrow, he said this was the second year of the exhibition, following last year's success which drew 30,000 visitors.

"This time we are expecting a larger crowd than before, if the weather permits," he said, adding the carnival aimed to share with the public about Proton’s experience and capabilities and showcase concept cars.

"Visitors are also able to visit its plant, go for a test drive, experience the Proton test track, tour 23 vendor booths, and check out promotions and sales packages," Rashid added.

The Alami Proton Carnival 2015, held at the Proton Centre of Excellence in Shah Alam, is open from 10am to 7pm.