Interference Engine List [and Non-Interference Engine List]

Does your car have an interference or non-interference engine? In this article, I will provide an interference engine list for several automotive brands. But what exactly is an interference engine?

Interference engines are common among the latest automotive models. Moreover, it refers to a 4-stroke internal combustion piston engine where the valves are completely open. Lastly, these valves extend to any area through which the piston may travel.

The lists of interference engines provided in this article include the following, among others:

  • GM Interference Engine List 
  • Ford Interference Engine List
  • Toyota Interference Engine List 
  • Honda Interference Engine List 
  • Nissan Interference Engine List

Read on to learn more about the different automotive brands with interference and non-interference engines, the impact of interference engines on your vehicles, and more.

What Is an Interference Engine?

interference engine list

An interference engine refers to a 4-stroke internal combustion piston engine type. Moreover, its valves are completely open and extend into areas through which the piston can travel.

This engine type relies on timing belts, chains, or gears. Additionally, they prevent the piston from hitting the valves. They make sure that the valves are all closed when the piston is near the top dead center.

On the contrary, a non-interference engine does not allow the piston to travel into any area where the valves open.

How to Distinguish Interference from Non-interference Engine

The latest vehicle models feature interference engines. This is because vehicle manufacturers aim to make engines increase their efficiency. You can do it by improving the compression ratio and allowing the valves to improve airflow.

To increase the compression ratio, the volume of the combustion chambers will have to be minimized. At the same time, the valves will need to have a wider opening to improve airflow.

If you are not sure whether your vehicle has interference or a non-interference engine, bring it to a car care shop. Better yet, on your next oil-change schedule, ask the mechanic about it. Technicians also have service manuals to check if the vehicle model features an interference or a non-interference engine.

Another way is to find out your car’s engine model and check its engine type using the lists below.

The following lists will allow you to determine whether your vehicle has an interference engine or not.

GM Interference Engine List 

  1. 1.0L Interference
  2. 1.3L Interference
  3. 1.4L Non-Interference
  4. 1.5L Interference
  5. 1.6L (Chevette & 1000) Non-Interference
  6. 1.6L (LeMans) Non-Interference
  7. 1.6L (Tracker 16 Valve) Interference
  8. 1.6L DOHC (Aveo) Interference
  9. 1.6L DOHC (Nova) Non-Interference
  10. 1.6L SOHC (Nova) Non-Interference
  11. 1.8L Diesel Interference
  12. 1.8L Gasoline Non-Interference
  13. 1.9L Ecotec SOHC Interference
  14. 1.9L Ecotec DOHC Interference
  15. 2.0L Non-Interference
  16. 2.2L Diesel Interference
  17. 2.3L Non-Interference
  18. 3.0L Interference
  19. 3.2L Interference
  20. 3.4L Non-Interference
  21. 3.5L Non-Interference
  22. 3.6L Interference

Ford Interference Engine List

  1. 1.3L Non-Interference
  2. 1.6L DOHC Non-Interference
  3. 1.6L SOHC Interference
  4. 1.8L Non-Interference
  5. 1.9L Non-Interference
  6. 2.0L DOHC (Contour, Escape, Focus, Mystique, ZX2 & 1999-2002 Cougar) Non-Interference
  7. 2.0L DOHC (Probe) Interference
  8. 2.0L Diesel Interference
  9. 2.0L SOHC Gasoline (Escort, Focus & Tracer) Non-Interference
  10. 2.0L SOHC Gasoline (Capri, Pinto & Ranger) Non-Interference
  11. 2.2L Interference
  12. 2.3L Diesel Interference
  13. 2.3L SOHC Gasoline Non-Interference
  14. 2.4L Diesel Interference
  15. 2.5L SOHC 4 Cyl. Non-Interference
  16. 2.5L V6 Non-Interference
  17. 3.0L SOHC Interference
  18. 3.0L & 3.2L SHO Non-Interference
  19. 3.3L Interference

Toyota Interference Engine List 

  1. 1.5L (1A-C, 3A-C & 3E) Interference
  2. 1.5L (3E-E & 5E-FE) Non-Interference
  3. 1.6L DOHC (4A-F & 4A-FE) Non-Interference
  4. 1.6L DOHC (4A-GE & 4A-GZE) Non-Interference
  5. 1.6L SOHC Non-Interference
  6. 1.8L Diesel Interference
  7. 1.8L DOHC Gasoline Interference
  8. 1.8L 7AFE, 4AFE, 4AF Non-Interference
  9. 2.0L Non-Interference
  10. 2.2L Diesel Interference
  11. 2.2L Gasoline Non-Interference
  12. 2.4L Diesel Interference
  13. 2.5L Non-Interference
  14. 2.8L Non-Interference
  15. 3.0L Inline 6 (Except 1998 2JZ-GE) Non-Interference
  16. 3.0L Inline 6 VVT-i (1998 2JZ-GE) Interference
  17. 3.0L V6 Non-Interference
  18. 3.3L 3MZ-FE V6 W / V VTi Interference
  19. 3.4L Non-Interference
  20. 3.5L V-6 Non-Interference
  21. 4.7L Interference

Honda Interference Engine List

All Honda engines are Interference except 3.0L & 3.2 which are Non-Interference

Nissan Interference Engine List

All Interference

Audi Interference Engine List

  1. 1.8L 1.9L Interference
  2. 2.8L V6 90 100 Quattro A4 A6 Interference

BMW Interference Engine List

  1. 2.5L 325I 525I Interference
  2. 4.0L 740I Interference

Acura Interference Engine List

  1. All except SLX Interference
  2. SLX Non-Interference

Chrysler Interference Engine List

non-interference engine list
  1. 1.4L, 1.5L & 1.6L Interference
  2. 1.7L Non-Interference
  3. 1.8L Interference
  4. 2.0L DOHC Interference
  5. 2.0L SOHC Interference
  6. 2.2L DOHC Interference
  7. 2.2L SOHC Non-Interference
  8. 2.22L SOHC Interference
  9. 2.3L Diesel Interference
  10. 2.4L DOHC Non-Interference (Valves may hit if camshafts turn out of time)
  11. 2.4L SOHC Interference
  12. 2.5L 4 Cyl. Non-Interference
  13. 2.5L V6 Interference
  14. 2.7L Interference
  15. 3.0L SOHC 12 Valve Engine Non-Interference
  16. 3.0L DOHC Interference
  17. 3.0L SOHC 24 Valve Engine Interference
  18. 3.2L Interference
  19. 3.3L Interference
  20. 3.5L Interference
  21. 3.8L Interference
  22. 4.0L Interference
  23. 5.7 Hemi Interference

Fiat Interference Engine List

  1. 1.3L 128 Series Interference
  2. 1.5L Stranda Interference
  3. 1.6L 124 Series Interference
  4. 1.8L 124 Series Interference
  5. 1.8L 131 Series, Brava Interference
  6. 2.0L Brava, Spider Interference

GEO Interference Engine List

  1. 1.0L Interference
  2. 1.3L Interference
  3. 1.5L Interference
  4. 1.6L DOHC (1989-92 Prizm GSI) Non-Interference
  5. 1.6L DOHC (1989-97 Prizm Except 1989-92 GSI) Interference
  6. 1.6L DOHC (Storm) Interference
  7. 1.6L SOHC (Prizm) Non-Interference
  8. 1.6L SOHC (Storm) Non-Interference
  9. 1.6L SOHC 8 Valve Engine (Tracker) Non-Interference
  10. 1.6L SOHC 16 Valve Engine (Tracker) Interference
  11. 1.8L DOHC (Prizm) Interference
  12. 1.8L DOHC (Storm) Interference

Hyundai Interference Engine List

All Interference

Infinity Interference Engine List

3.0L & 3.3L Interference

Isuzu Interference Engine List

  1. 1.5L Interference
  2. 1.6L DOHC Interference
  3. 1.6L SOHC Non-Interference
  4. 1.8L Diesel Interference
  5. 1.8L DOHC Gasoline Interference
  6. 2.0L Interference
  7. 2.2L Diesel Interference
  8. n2.2L Gasoline Interference
  9. 2.3L Interference
  10. 2.6L Interference
  11. 3.2L Interference
  12. 3.5L Non-Interference

Jeep Interference Engine List

  1. 2.0L Non-Interference
  2. 2.1L Diesel Interference
  3. 2.4L DOHC Interference
  4. 2.8L Diesel Interference

Kia Interference Engine List

  1. 1.5L DOHC Interference
  2. 1.6L DOHC Interference
  3. 1.6L SOHC Non-Interference
  4. 1.8L DOHC Interference
  5. 2.0L DOHC Interference
  6. 2.0L SOHC Non-Interference
  7. 2.4L DOHC Interference
  8. 2.5L DOHC Interference
  9. 2.7L DOHC Interference
  10. 3.5L DOHC Interference

Lexus Interference Engine List

  1. 2.5L Non-Interference
  2. 3.0L V6 Non-Interference
  3. 3.3L V6 Non-Interference
  4. 3.0L Inline 6 (1992-97) Non-Interference
  5. 3.0L Inline 6 VVT-i (1998-2006) Interference
  6. 4.0L Interference
  7. 4.3L Interference
  8. 4.7L Interference

Mazda Interference Engine List

  1. 1.5L Non-Interference
  2. 1.6L Non-Interference
  3. 1.8L 4 Cyl. Non-Interference
  4. 1.8L V6 Non-Interference
  5. 2.0L Diesel Interference
  6. 2.0L DOHC (626, MX-6 & Protege) Non-Interference
  7. 2.0L DOHC (Tribute) Non-Interference
  8. 2.0L SOHC Non-Interference
  9. 2.2L Interference
  10. 2.3L 4 Cyl. (B2300) Non-Interference
  11. 2.3L V6 Non-Interference
  12. 2.5L 4 Cyl. (B2500) Non-Interference
  13. 2.5L V6 Non-Interference
  14. 3.0L DOHC Interference
  15. 3.0L SOHC Interference

Mercury Interference Engine List

  1. Villager 3.0 Non-Interference
  2. Villager 3.3 Non-Interference

Mitsubishi Interference Engine List

engine list
  1. 1.5L Interference
  2. 1.6L DOHC Interference
  3. 1.6L SOHC Interference
  4. 1.8L Interference
  5. 2.0L DOHC Interference
  6. 2.0L SOHC Interference
  7. 2.3L Diesel Interference
  8. 2.4L DOHC Interference
  9. 2.4L SOHC Interference
  10. 3.0L DOHC Interference
  11. 3.0L SOHC 12 Valve Engine Non-Interference
  12. 3.0L SOHC 24 Valve Engine Interference
  13. 3.5L DOHC Interference
  14. 3.5L SOHC Interference
  15. 3.8L Interference

Porsche Interference Engine List

  1. 2.0L 924 Turbo Interference
  2. 2.5L 944 Interference
  3. 2.7L 944 Interference
  4. 3.0L 944 Interference
  5. 4.5L 928 Interference
  6. 4.7L 928 Interference
  7. 5.0L 928 Interference
  8. 5.4L 928 Interference

Subaru Interference Engine List

  1. DOHC Interference
  2. SOHC Non-Interference

Suzuki Interference Engine List

  1. 1.3L DOHC Interference
  2. 1.3L SOHC Interference
  3. 1.6L 8 Valve Engine Non-Interference
  4. 1.6L 16 Valve Engine Interference
  5. 2.0L DOHC Interference

Volkswagen Interference Engine List

  1. TDI 1.8L – 8 valve Non-Interference
  2. 2.0L – 8 valve Non-Interference (However there have been instances of bent valves)
  3. 16 valve diesels Interference
  4. VR6 Interference

Volvo Interference Engine List

  1. B200 (E, F, G, GT, FT) Interference
  2. B204 (E, F, GT, FT) Interference
  3. B230E (high-compression) Interference
  4. B230 Non American – Interference
  5. B234 (F, G) Intereference
  6. 240DL 2.3 Non-Interference
  7. B5XXX five-cylinder inline engines – Interference
  8. 6XXX six-cylinder engines Interference
  9. FK Non-Interference engine
  10. 240 SOHC Non-Interference
  11. 740 SOHC Non-Interference
  12. 940 SOHC Non-Interference
  13. The 16 Valve Volvo engines are all Interference
  14. 850 Interference
  15. 960 Interference
  16. S40 Interference
  17. S / V / C 70 Interference
  18. S60 Interference
  19. S80 Interference
  20. XC90’s Interference

If the Timing Belt Breaks While Driving an Interference Engine

If the timing chain or timing belt breaks or gets loose, it will skip a few teeth on the crank gear or cam. Suffice it to say that the rotation of both the camshaft and the crankshaft fails to synchronize.

With an interference engine, a malfunctioned timing belt can cause the pistons to strike the valves. This is because pistons will continue moving, which will most likely hit valves in a completely open position. Unfortunately, this scenario can damage the valves. However, the worst-case scenario is the possibility that the engine will get extremely damaged.

If the timing belt or timing chain breaks assess the damage as soon as possible. Moreover, you can bring your vehicle to a car care shop for a leak-down cylinder test or a valve-gap check. In most cases, there is a bent valve if there is a large valve gap.

You can also have your vehicle checked for cylinder damage. Moreover, if you bring your vehicle to a car care shop, the mechanic will use a borescope camera to assess your vehicle. The camera will be inserted through the spark plug hole. Thus, this way, they will be able to check if there are damages inside the cylinders.

Bent Valve Repair Options

There is no standard repair process for bent valves. This is because repair options vary, depending on the type or severity of the damage.

For instance, if the cylinders and pistons are damaged, there is no other option but to replace or rebuild the engine. If the cylinders and pistons are in place, but several valves are bent, there might not be any need to replace or rebuild the entire engine anymore. Instead, you can have the cylinder head rebuilt and the bent valves replaced. You can have several timing belt components replaced too.

Unfortunately, with this type of car issue, there is a huge amount of labor involved. So, you have to expect that repair will be costly. In some cases, mechanics would even suggest replacing the entire engine instead. It doesn’t have to be a brand new engine. A used but running unit will already do the job. They are reasonably priced too.

Conclusion – Interference Engine List

Interference engines are common among the latest automotive models. It refers to a 4-stroke internal combustion piston engine wherein the valves are in a completely open position. Moreover, these valves extend to any area through which the piston may travel.

The lists of interference engines provided in this article include the following, among others:

  • GM Interference Engine List 
  • Ford Interference Engine List
  • Toyota Interference Engine List 
  • Honda Interference Engine List 
  • Nissan Interference Engine List

If you are not sure about the type of engine your vehicle has, the list above is expected to help you identify it.

You might ask, is it important to know whether your car has an interference or non-interference engine? Well, it might not be that important for you because you can always bring your vehicle to a car care shop when needed.

However, when you own a vehicle, you must know its features. It’s basically the same as any gadget or electronic items that you own. You have to know the features of each one of them. Besides, it always pays to know.