--- title: Motorhome and RV Smog Check Rules in Reno | Xpress Smog url: https://xpresssmogcenter.com/vehicles/motorhomes-and-rvs/ 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/) - Motorhomes and RVs # Smog check rules for motorhomes and RVs A gasoline motorhome based in the Washoe testing area needs a smog check every year whatever it weighs, and as a heavy-duty vehicle it gets the two-speed tailpipe test. A diesel motorhome tests only if its GVWR is 14,000 pounds or less; call the service center to ask about a motorhome before you bring it. 4.7 stars from 550 Google reviews of the two Reno Xpress Oil & Lube Centers Motorhome owners in Reno and Sparks get the same renewal notice as everyone else, but two facts about the coach change what that notice means: the fuel it burns and the weight its chassis is rated for. This page sorts out both, then covers the practical side of getting a big vehicle tested. ## At a glance - Gasoline vehicles are tested at any weight in the Washoe testing area (Nevada DMV). - Heavy-duty vehicles, 8,501 pounds and up, keep the two-speed tailpipe method. - Diesel coaches over 14,000 pounds GVWR are on the DMV exempt list, with roadside opacity rules instead. - Size matters at the bay: call either Reno location first. ## Fuel first, then weight The Nevada DMV's emission control page lists the vehicles that need a test, and the wording settles most motorhome questions: gasoline powered vehicles of any weight, and diesel powered vehicles with a GVWR up to 14,000 pounds, model year 1968 or newer, based in the urban parts of Washoe or Clark county. A gas coach has no weight that takes it out of the program. A diesel pusher usually does, because heavy diesel coaches sit well above that line. So the first question is what is in the tank. The second question, for a gasoline coach, is which test it gets, and that turns on the weight class. ## Why a newer gas coach still gets a tailpipe test Owners of a recent motorhome sometimes expect the quick plug-in check their car gets. The DMV's on-board diagnostics page explains why that does not happen: 1996 and newer light-duty vehicles get an OBD II inspection, while 1995 and older vehicles and all heavy-duty vehicles continue with the traditional two-speed tailpipe method. The DMV draws the heavy-duty line at 8,501 pounds. Class A and Class C coaches are built on truck chassis rated far above that, so they fall in the heavy-duty class no matter how new they are. Some van-based campers are lighter; the weight rating on the manufacturer's label tells you which side yours is on. The [tailpipe test page](https://xpresssmogcenter.com/smog-check/older-vehicles-tailpipe-test/) explains what the two-speed test measures. ## Diesel coaches A diesel motorhome at 14,000 pounds GVWR or less is tested every year with the DMV's diesel procedure. Heavier diesel coaches are on the exempt list, but the DMV's diesel page says its roadside enforcement team checks exhaust opacity statewide on vehicles over 14,000 pounds, including those registered in other states. The full diesel rules are on the [diesel smog check page](https://xpresssmogcenter.com/smog-check/diesel-smog-check/). ## Bringing a motorhome to a Reno location Both locations sit inside an Xpress Oil & Lube Center, and a motorhome is a lot of vehicle for any bay. Before you drive over, call the service center: Reno Northwest on Mae Anne Ave at (775) 787-1000, or Reno South on Longley Ln near the airport at (775) 828-6996. Tell them the fuel, the length and the height, and they will tell you what to do. Hours are Monday to Friday 8 am to 5 pm at both, with Saturday 8 am to 4 pm at Reno Northwest and 8 am to 3 pm at Reno South. - The renewal notice, if you plan to renew the registration in the same visit. - The odometer reading. - The chassis weight rating from the manufacturer's label, so the call goes quickly. ## Coaches that spend the season away A pass is good for 90 days, so a coach that will be on the road at renewal time can test before it leaves. If the motorhome is based in Reno but kept and used outside Nevada for a stretch, the DMV's Emission Control Exemption Application (form EC-008) lets you register or renew without the test; file it before the registration expires, because Nevada has no grace period. The [renewal page](https://xpresssmogcenter.com/smog-check/registration-renewal/) covers the rest of the renewal steps. ### Sources - [dmv.nv.gov/emission.htm](https://dmv.nv.gov/emission.htm) (Nevada DMV Emission Control Program: gasoline any weight, diesel up to 14,000 lb GVWR, exempt list, light and heavy duty classes; 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 tailpipe method; read 10/19/26) - [dmv.nv.gov/emission_diesel.htm](https://dmv.nv.gov/emission_diesel.htm) (Nevada DMV Diesel Testing and Enforcement: roadside opacity over 14,000 lb; read 10/19/26) - [dmv.nv.gov/pdfforms/ec008.pdf](https://dmv.nv.gov/pdfforms/ec008.pdf) (Nevada DMV EC-008 Emission Control Exemption Application; 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 Pleasnt swift smog service [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 heavy-duty gas trucks](https://xpresssmogcenter.com/vehicles/heavy-duty-gas-trucks/) - [Reno South smog check](https://xpresssmogcenter.com/locations/reno-longley/) - [Reno Northwest smog check](https://xpresssmogcenter.com/locations/reno-mae-anne/) 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/)[### Diesel smog check rules Which diesels test in Washoe County and how. Learn more](https://xpresssmogcenter.com/smog-check/diesel-smog-check/)[### Smog check for your registration renewal The yearly test before you renew a Washoe County registration. Learn more](https://xpresssmogcenter.com/smog-check/registration-renewal/) ## Other vehicle types [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 heavy-duty gas trucks 8,501 lb and up: tested every year, tailpipe method. Learn more](https://xpresssmogcenter.com/vehicles/heavy-duty-gas-trucks/)[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/) ## Motorhomes and RVs: questions Still have a question? Call either Reno location or just drive in; there is no appointment to make. ### My gas motorhome weighs more than a pickup. Is it still tested? Yes. The DMV tests gasoline vehicles at any weight in the Washoe testing area, every year at renewal. ### Does a 2022 gas coach get the OBD plug-in test? Not if it is rated 8,501 pounds or more. The DMV keeps all heavy-duty vehicles on the two-speed tailpipe method. ### Is my diesel pusher exempt? If its GVWR is over 14,000 pounds, it is on the DMV exempt list for the yearly test, though roadside opacity rules still apply. ### Can I just drive the motorhome in? Call first. Ask the service center about your coach before you bring it, so you know where to go and when. ## 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/)