When it comes to buying a car, independent vehicle cleaning services are a no-brainer, according to a new study

Independent vehicle cleaning and maintenance services are booming, with many companies offering them to drivers who are in need of repairs and cleaning of their vehicles.

The new study by independent vehicle cleaner company Macara shows that the sector has grown more than 20 percent in 2017, to $4.2 billion.

The growth comes as demand for such services has surged in the U.S. and abroad.

Macara is one of the biggest independent vehicle cleaners in the country, and its clientele spans the globe, with clients from Australia, France, Germany, and Japan.

The study, released Wednesday, examined the trends of independent vehicle cleaners and found that the number of people cleaning vehicles has doubled in the last decade, with more than 40 million vehicles covered in the sector in the past decade.

Macara says its clients include “some of the largest and most reputable independent vehicle companies in the world,” including Toyota, Ford, Volkswagen, Hyundai, Mitsubishi, and Kia.

The company’s CEO, Chris Rydstrom, said the growth of independent cleaning services has been driven in part by technological advancements.

He told Engadgets the company’s technology has become so advanced, that cleaning operations have become more efficient, which in turn means customers no longer have to clean their vehicles every week.

The market has grown, he said, adding that its growth has been largely driven by consumer demand for independent vehicle maintenance.

“The number of vehicle maintenance services that we provide is growing, as well as our clientele that we have here in the States and overseas,” he said.

The research found that a large number of car owners are finding independent vehicle services difficult to find, with a survey by independent car cleaning company L’Oréal published last year finding that nearly one-third of its customers surveyed did not want to clean or maintain their vehicles, with just one in five of those who answered said they were willing to pay the cost of cleaning.