Does Emissions Testing Old Cars Still Make Sense? California, Leno’s Law, and the Reality for Imported Cars

The Drive recently asked whether emissions testing old cars still makes sense anymore. For most classic car owners, that question is already complicated. For California buyers looking at Japanese direct import vehicles, it gets even more complicated.

The Drive Asked the Right Question

The Drive recently published an article and video asking a question that comes up constantly in the classic car world: does emissions testing old cars actually make sense anymore?

It is a fair question. Modern vehicles are cleaner than ever. Many older enthusiast cars are driven only a few thousand miles per year, if that. Some are collector vehicles, weekend cars, event cars, or preserved historical vehicles that spend far more time in garages than in traffic.

At the same time, California still has one of the strictest emissions systems in the country. The rules can be especially difficult for owners of older performance cars, classics, and imported vehicles.

For people outside California, the conversation can sound simple. Old cars are rare, many are not daily drivers, and the cost of testing or repairing them can sometimes exceed the environmental benefit.

For people inside California, and especially for people dealing with imported Japanese vehicles, the reality is more complicated.

You can read The Drive article here: Does Emissions Testing Old Cars Actually Make Sense Anymore?

California Still Uses a Fixed 1975 Cutoff

California’s basic rule is straightforward, but strict. Gasoline, hybrid, and alternative fuel vehicles from model year 1976 and newer generally require a Smog Check. Vehicles from model year 1975 and older are generally exempt from California Smog Check requirements.

That fixed cutoff is the reason a 1975 vehicle and a 1976 vehicle can be treated completely differently, even if they are mechanically similar. It is also why California enthusiasts have spent decades pushing for some kind of rolling exemption, collector exemption, or updated rule that reflects how old many post 1975 cars now are.

Today, an early emissions era vehicle from the late 1970s or 1980s can be nearly 50 years old and still be required to pass California smog. Parts availability can be poor. Original emissions labels may be missing. Some testing equipment is less common. Many of these cars were built during a period when emissions systems were still developing, and those systems were not always simple or well supported.

That is the heart of the argument raised by The Drive. At what point does testing a small number of rarely driven older vehicles become more of a burden than a benefit?

Leno’s Law Tried to Address That Problem

Jay Leno’s Law was introduced as an attempt to modernize California’s treatment of older collector vehicles. The idea was not to give every old car a free pass. The proposal focused on collector vehicles, historical use, limited use, and older model years.

SB 1392 would create a path for certain older collector cars to be exempt from the biennial smog certificate requirement. The structure is phased in by model year, beginning with vehicles manufactured before the 1981 model year, then gradually moving forward until the exemption reaches vehicles manufactured before the 1986 model year.

That would matter for a lot of California enthusiasts. Cars from the late 1970s and early 1980s are now genuine classics. Many are preserved, restored, or modified by owners who spend far more maintaining them than the average commuter spends on a used appliance car. These cars are also not usually the vehicles clogging freeways every morning.

But there is an important detail for our customers and readers. Imported vehicles are not the same thing as normal California used cars.

Direct Import Cars Are a Separate California Problem

This is where the conversation gets confusing.

A vehicle can be legal to import into the United States under the federal 25 year rule and still not be automatically legal to register in California. Federal import legality and California registration legality are two different things.

California treats direct import vehicles differently. A direct import vehicle, often called a gray market vehicle, is a vehicle originally manufactured for sale outside the United States. Many Japanese market vehicles fall into this category, including vehicles like the Nissan Skyline GT R, Nissan Silvia, Nissan Stagea, Toyota Chaser, Mitsubishi Lancer Evolution, and many other JDM models.

For 1975 and newer direct import vehicles, California generally requires a much more involved process than a normal Smog Check. The vehicle may need ARB or CARB laboratory emissions testing, a Certificate of Conformance, and a BAR referee label before DMV registration can be completed.

That is the part many people miss.

A normal California car and a direct import car may both be 25 years old, 30 years old, or 35 years old, but they are not necessarily in the same regulatory bucket. A U.S. market 1990s vehicle may already have a U.S. emissions certification history. A Japanese market vehicle may not. California wants proof that the vehicle meets the applicable emissions standards before it can be registered.

That is why we have been saying for years that Leno’s Law type proposals do not automatically solve the direct import issue. Even when collector exemptions are discussed, California direct import compliance remains its own process.

In past discussions around Leno’s Law, direct import vehicles were specifically called out as a concern, and the practical takeaway was clear: do not assume a collector smog exemption would apply to a direct import vehicle. For California buyers, a JDM car still has to be evaluated through the California direct import lens.

Why This Matters for JDM Buyers

This is a big deal for anyone shopping for a Japanese import.

• A 25 year old vehicle can be federally legal to import. That does not mean it can be registered in California without additional work.
• A vehicle with an out of state title can look appealing. That does not mean California DMV, BAR, or CARB will treat it as ready to register.
• A vehicle that is clean, stock, and well maintained is a better starting point. That does not mean it is automatically California compliant.

For many direct import cars, especially 1975 and newer gasoline vehicles, California compliance can involve laboratory testing, emissions related modifications, documentation, referee inspection, and DMV review.

Small mechanical issues can become big problems during this process. Vacuum leaks, fuel control problems, oxygen sensor issues, exhaust leaks, evaporative leaks, weak ignition components, poor grounds, missing emissions components, modified ECUs, non approved catalytic converters, and non stock parts can all create problems.

This is why California buyers need to ask the compliance question before buying the car, not after.

Does Testing Old Cars Still Make Sense?

There are really two separate questions.

The first question is whether California should keep testing older collector cars that are rarely driven, well maintained, and preserved mostly for historical or enthusiast use.

That is where The Drive’s argument makes sense. A blanket rule that treats a 1976 collector car like an ordinary transportation vehicle can feel outdated. A reasonable collector exemption, mileage limit, insurance requirement, or historical registration requirement could preserve air quality goals while reducing unnecessary burden on owners of true classic vehicles.

The second question is whether California should treat direct import vehicles the same way as U.S. market collector cars.

That is a different issue. California’s position has historically been that direct import vehicles must prove emissions compliance because they were not originally certified for the U.S. or California market. Whether you agree with that system or not, that is the system buyers have to navigate.

For imported Japanese vehicles, the practical advice is simple: assume California is harder than every other state until proven otherwise.

Shop U.S. Legal JDM Cars

If you are shopping for a Japanese import, start with a car that has been properly imported, inspected, documented, and represented honestly. California buyers should also understand whether the vehicle is already California compliant, potentially eligible, or better suited for registration outside California.

The Bottom Line

We understand why enthusiasts support Leno’s Law. California’s fixed 1975 cutoff has not kept up with the age of the collector car market. Cars from the late 1970s, 1980s, and even early 1990s are now legitimate classics. Many are not daily transportation, and many are maintained to a higher standard than ordinary used cars.

But for JDM and other direct import vehicles, the situation is not as simple as “35 years old equals exempt.”

California compliance for direct import vehicles remains a separate process. A car can be old, rare, collectible, federally legal, and still need California specific emissions work before it can be registered here.

If you are looking at a Nissan Skyline GT R, Nissan Silvia, Nissan Stagea, Toyota Chaser, Mitsubishi Lancer Evolution, kei truck, Land Cruiser, or any other direct import vehicle and you want to register it in California, talk to someone who understands the process before you buy. The cost of asking first is much lower than the cost of buying the wrong car and discovering the problem later.

At Toprank Importers, we have been dealing with California, EPA, CARB, BAR, direct import vehicles, and JDM compliance for more than 25 years. We know the process can be frustrating. We did not write the rules, but we know how to help buyers understand them before they make an expensive mistake.

Old car emissions testing may be overdue for reform. Leno’s Law is part of that conversation. But for California JDM buyers, the most important rule has not changed:

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