--- title: Heavy-Duty Gas Truck Smog Check Rules, Reno | Xpress Smog url: https://xpresssmogcenter.com/vehicles/heavy-duty-gas-trucks/ business: Xpress Smog Check Center (Located inside Xpress Oil & Lube Center) locations: Reno Northwest: 6100 Mae Anne Ave, Reno, NV 89523, (775) 787-1000, Mon-Fri 8 am-5 pm, Sat 8 am-4 pm, Sun closed; Reno South: 4993 Longley Ln, Reno, NV 89502, (775) 828-6996, Mon-Fri 8 am-5 pm, Sat 8 am-3 pm, Sun closed type: Nevada smog check (vehicle emissions inspection), drive in, no appointment --- Located inside Xpress Oil & Lube Center - Smog check at two Reno locations - Oil change in the same visit - No appointment needed [Xpress Oil & Lube](https://xpressoilandlube.com/) - [Home](https://xpresssmogcenter.com/) - [Vehicle types](https://xpresssmogcenter.com/vehicles/) - Heavy-duty gas trucks # Smog check rules for heavy-duty gas trucks In Nevada a gasoline truck rated at 8,501 pounds or more is heavy duty, and heavy-duty gas trucks based in the Washoe testing area are tested every year with the two-speed tailpipe method. There is no weight above which a gasoline vehicle stops testing, so call the service center to ask about a large truck before you bring it. 4.7 stars from 550 Google reviews of the two Reno Xpress Oil & Lube Centers - Find the weight rating Read the manufacturer's label, usually on the driver's door jamb, and note whether it is above 8,500 pounds. - Check the renewal notice It says Smog Check Required when the DMV expects a test for that truck. - Call the service center Reno Northwest (775) 787-1000 or Reno South (775) 828-6996; give the size of the truck and ask where and when to bring it. - Test early in the window A pass is good for 90 days, which leaves room for a repair and retest before the deadline. Box trucks, stake beds, cutaway vans, large work trucks and the gas pickups at the top of each maker's range all land in the same DMV category. The rules for that category are short, but two of them surprise owners, and both come straight from the Nevada DMV's own pages. ## At a glance - Light duty = gasoline up to 8,500 pounds; heavy duty = 8,501 pounds or more (Nevada DMV). - Gasoline vehicles are tested at any weight; only diesels have a 14,000 pound cutoff. - All heavy-duty vehicles keep the two-speed tailpipe test, even 1996 and newer. - Large truck: call either Reno location before you drive over. ## Two surprises in the DMV's wording The first is the weight. The DMV's emission control page says gasoline powered vehicles are tested at any weight, and only diesel vehicles get a ceiling, at 14,000 pounds GVWR. Owners who have heard that big trucks are exempt are thinking of heavy diesels. A gasoline truck at 10,000, 16,000 or 26,000 pounds based in Reno or Sparks is still in the program, every year, from its fourth registration. The second is the test method. The DMV's on-board diagnostics page says 1996 and newer light-duty vehicles get the OBD II inspection, and that 1995 and older vehicles and all heavy-duty vehicles continue with the traditional two-speed tailpipe method. A brand-new heavy-duty gas truck has an OBD port, but the Nevada test for its class is the tailpipe test. ## Where the 8,501 pound line comes from The DMV defines the classes itself: light duty means gasoline vehicles up to 8,500 pounds, heavy duty means 8,501 pounds or more. The weight to look at is the rating on the manufacturer's label. If your truck sits close to the line, the label settles which test it gets, and your renewal notice settles whether one is due this year. ## When a heavy-duty truck fails The path after a failed test is the same repair, retest and possible waiver path every vehicle follows, with one difference in the qualifying reason. For heavy-duty vehicles of any year, the DMV's waiver rule looks at carbon monoxide and hydrocarbon readings over the standard, not at a check engine light. In Washoe County the DMV's waiver minimum is $200 in qualifying repair receipts from a 2G station or the registered owner. The [tailpipe test page](https://xpresssmogcenter.com/smog-check/older-vehicles-tailpipe-test/) explains what the two readings mean. ## Business trucks Most heavy gas trucks in Washoe County work for a business. The DMV's Continuous Monitoring Program, which lets a fleet skip the station test, is written for 2008 and newer light-duty gasoline fleet vehicles, so a heavy-duty truck stays on the yearly station test. Scheduling tips for several company vehicles are on the [fleet vehicles page](https://xpresssmogcenter.com/smog-check/fleet-vehicles/), and if the truck is a diesel rather than gas, the [diesel page](https://xpresssmogcenter.com/smog-check/diesel-smog-check/) has the rules that apply instead. ## At the two Reno locations Both locations are inside an Xpress Oil & Lube Center, Reno Northwest on Mae Anne Ave and Reno South on Longley Ln near the airport and I-580. A large truck needs a word in advance, so call the service center to ask about a large truck before you bring it. Weekday hours at both are 8 am to 5 pm; Saturday is 8 am to 4 pm at Reno Northwest and 8 am to 3 pm at Reno South. ### Sources - [dmv.nv.gov/emission.htm](https://dmv.nv.gov/emission.htm) (Nevada DMV Emission Control Program: gasoline any weight, light and heavy duty classes, waiver rules; read 10/19/26) - [dmv.nv.gov/emission_obd.htm](https://dmv.nv.gov/emission_obd.htm) (Nevada DMV On-Board Diagnostics: heavy-duty vehicles keep the two-speed method; read 10/19/26) - [dmv.nv.gov/regrenewal.htm](https://dmv.nv.gov/regrenewal.htm) (Nevada DMV Registration Renewal: Washoe waiver receipts; read 10/19/26) - [dmv.nv.gov/emission_cm.htm](https://dmv.nv.gov/emission_cm.htm) (Nevada DMV Continuous Monitoring: light-duty gasoline fleets only; read 10/19/26) ### Your location: Reno South - Call [(775) 828-6996](tel:+17758286996) Mon-Fri 8 am-5 pm, Sat 8 am-3 pm, Sun closed - Address 4993 Longley Ln, Reno, NV 89502 [Directions](https://www.google.com/maps/dir/?api=1&destination=4993+Longley+Ln%2C+Reno%2C+NV+89502&destination_place_id=ChIJc5xNCcI_mYARXjHn3y79iJw) ### What a customer said Reno South I go here to get my person vehicle smogged and all of our fleet vehicles. The team here is great. They are attentive and quick with their work. I would highly recommend coming here if you're in Reno and need your car smogged. [All smog check reviews](https://xpresssmogcenter.com/reviews/) ### Related - [Motorhomes and heavier gas trucks](https://xpresssmogcenter.com/faq/motorhomes-and-heavy-trucks/) - [The two-speed idle tailpipe test](https://xpresssmogcenter.com/guides/two-speed-idle-test/) - [Smog check rules for pickup trucks and vans](https://xpresssmogcenter.com/vehicles/pickup-trucks-and-vans/) - [Smog waiver in Washoe County](https://xpresssmogcenter.com/smog-check/smog-waiver/) - [The Washoe waiver: what counts toward the minimum](https://xpresssmogcenter.com/guides/waiver-math-washoe/) Located inside Xpress Oil & Lube Center Both smog check locations sit inside an Xpress Oil & Lube Center, the locally owned Reno drive-in that has served this town since 1983. Drive in, no appointment; get your oil changed in the same visit. [About us](https://xpresssmogcenter.com/about/) ## Related situations [### 1968 to 1995 vehicles: the tailpipe test How older cars and heavy-duty trucks are tested. Learn more](https://xpresssmogcenter.com/smog-check/older-vehicles-tailpipe-test/)[### Smog checks for business fleets Work trucks, vans and company cars registered in Washoe County. Learn more](https://xpresssmogcenter.com/smog-check/fleet-vehicles/)[### Diesel smog check rules Which diesels test in Washoe County and how. Learn more](https://xpresssmogcenter.com/smog-check/diesel-smog-check/) ## Other vehicle types [Smog check rules for motorhomes and RVs Gas motorhomes test at any weight; heavy diesels do not. Learn more](https://xpresssmogcenter.com/vehicles/motorhomes-and-rvs/)[Smog check rules for motorcycles and mopeds Motorcycles and mopeds are on the DMV exempt list. Learn more](https://xpresssmogcenter.com/vehicles/motorcycles-and-mopeds/)[Smog check rules for pickup trucks and vans The 8,500 lb line decides plug-in test or tailpipe test. Learn more](https://xpresssmogcenter.com/vehicles/pickup-trucks-and-vans/)[Smog check rules for leased cars and trucks Leases test every year; a lessor-to-lessor transfer can be exempt. Learn more](https://xpresssmogcenter.com/vehicles/leased-vehicles/)[Smog check rules for replica vehicles Replica Vehicle registrations are on the exempt list. Learn more](https://xpresssmogcenter.com/vehicles/replica-vehicles/)[Smog check rules for propane and natural gas vehicles Running permanently on propane, CNG, methane or butane means exempt. Learn more](https://xpresssmogcenter.com/vehicles/propane-and-natural-gas-vehicles/) ## Heavy-duty gas trucks: questions Still have a question? Call either Reno location or just drive in; there is no appointment to make. ### My gas truck is rated 14,500 pounds. Isn't that over the limit? The 14,000 pound limit is for diesels. The DMV tests gasoline vehicles at any weight. ### Why didn't my newer truck get the plug-in test? The DMV keeps all heavy-duty vehicles, 8,501 pounds and up, on the two-speed tailpipe method regardless of year. ### Can a heavy gas truck get a waiver for a check engine light? The DMV's waiver qualifier for heavy-duty vehicles is a fail for carbon monoxide or hydrocarbons over the standard. ### Can the truck get an oil change during the same stop? Both locations are inside an Xpress Oil & Lube Center; ask about it when you call about the truck. ## Two Reno locations, inside Xpress Oil & Lube Center [Reno Northwest smog check](https://xpresssmogcenter.com/locations/reno-mae-anne/)[Reno South smog check](https://xpresssmogcenter.com/locations/reno-longley/)