Since its inception in 2011, Prostoptestonly has been at the forefront of providing top-notch smog check services in San Bernardino, CA 92410. We have now expanded to Walnut, CA 91789 where we also becoming renowned for quality.  Our services are offered at very competitive prices. Our quality is unprecedented. We are also committed to goodwill and friendship that is why we strive to provide our clients with an indelible experience after visiting our station.

Unlike most smog check centers who make vain promises and deliver poor services, Prostoptestonly has a reputation to protect. We keep to our words. Excellence is our watchword. There’s no gainsaying that we the most promising smog check center in California.

We have a group of well-trained, expert and experienced smog check technicians who take on their duties with panache and great professionalism.

We are passionate about our job and we approach every duty with all optimism. Our customer support is unrivalled. That is why we standout form our competitors.

We offer a wide range of smog check inspections and services, they include;

  • DMV Required smog check
  • Diesel smog check
  • Gross Polluter certification
  • Out of State smog testing
  • Test only smog check
  • Title transfer smog check
  • Smog Check Certification
  • Smog Test for all Cars, RV’s, SUV’s, Trucks, Vans,
  • Vehicle registration smog check