New Car Running-In Period: Do You Still Need to Run In a New Car?

Summary

• Modern cars still benefit from gentle driving in the first 1,000 miles.
• Don't rev the engine hard: Keep below 3,000-4,000 rpm for the first 600-1,000 miles.
• Varies by manufacturer: Some recommend a running-in period, others say it's not needed.

You've just picked up a brand new car. Shiny, fresh, and full of promise. Should you baby it for the first few hundred miles?

The short answer: yes, a little care in the early miles can help your engine last longer. Here's what you need to know.

---

What Is Running In?

Running in (also called breaking in) is the process of letting new engine parts bed in properly. New pistons, rings, and bearings need time to settle against each other.

During the first 600-1,000 miles, these parts create a smooth, tight seal. Driving too hard too early can cause uneven wear or reduced engine life.

---

Do Modern Cars Still Need Running In?

Yes, but less than older cars. Modern manufacturing is much more precise. Tolerances are tighter and finishes are smoother.

However, metal parts still need to bed in. Oils need to circulate and reach all surfaces. Brakes need to be bedded in too.

Most manufacturers still recommend a running-in period in their owner's manuals — even if they don't always advertise it.

---

Running-In Tips for the First 1,000 Miles

1. Keep engine speed moderate: Stay below 3,000-4,000 rpm. Don't floor it or use full throttle.
2. Vary your speed: Don't cruise at the same speed for long periods. Vary between 30-60 mph. This helps different engine speeds bed in evenly.
3. Avoid heavy loads: Don't tow or carry very heavy loads in the first 1,000 miles.
4. Don't use cruise control too much: Constant speed means constant load. Vary your driving.
5. Be gentle with the brakes: New brake pads and discs need bedding in. Avoid emergency stops if possible.
6. Check oil early: New engines can use a bit more oil in the first few thousand miles. Check the level regularly.
7. Don't skip the first service: The first service is important. It removes metal particles that build up during running in.

Important: The first oil change is crucial. Running-in produces tiny metal particles that need to be flushed out. Don't skip or delay the first service.

---

Do Electric Cars Need Running In?

Electric cars don't have a traditional engine, so there's no engine running-in period. However:

• Brakes still need bedding in: Take it easy with braking for the first 200 miles.
• Tyres need scrubbing in: New tyres have a shiny coating that needs wearing off. Take it easy on corners for the first 100 miles.
• Battery conditioning: Some manufacturers recommend not charging to 100% or depleting to 0% in the first few charge cycles.

---

New Tyre Running In

New tyres — whether on a new car or just replaced — need about 100-200 miles to reach full grip. This is because:

• New tyres have a release agent on the surface from manufacturing. This makes them slightly slippery.
• The tread surface needs to roughen up for maximum grip.

Take corners gently and brake cautiously for the first 100-200 miles with new tyres.

---

After the Running-In Period

Once you've done 1,000-1,500 miles, you can drive normally. The engine is bedded in and ready for whatever you throw at it.

Keep up with regular servicing to maintain the engine's health. Read our servicing guide for the full details.

---

Running in a new car isn't about driving slowly — it's about driving sensibly for the first 1,000 miles. A little patience at the start means a healthier engine for years to come. Think of it as an investment in your car's future.

Read our other articles: