Most new cars need to be treated well in the first 2,500 km of its life, so that they give you a longer life span. Manufacturers will recommend a running-in period usually of about 1000 km, but it will serve you well to extend this period before driving the car at its full potential.

This is called the Running-in Period, and what you do in these 2,500 kms will define how long the car will last you and how it will perform through its lifespan.

ertiga engine

Why do you need to run-in an engine?

When engines are manufactured, there are minor imperfections in the machining that need to even out. The pistons especially need to smoothly move up and down in the cylinders, and form an effective oil seal between the piston rings and the cylinder wall to prevent wear and tear on the engine, excessive oil consumption and poor performance and mileage.

Therefore you need to be gentle with the engine in the first 2,500 km of driving a new car to allow for all the parts to “bed-in” or form a sort of harmony with each other. It’s not just the engine, even the gearbox, brakes, bearings and tyres need time to settle down for optimum performance. There’s a reason many cars begin to give better mileage after their first service.

Here are some pointers on how to successfully run-in your engine to extend the life of your car. Follow this for the first 2,500 km of driving (and beyond if you can):

Warm up the engine

When you start a cold engine, let the car idle for at least two minutes before you move off, allowing for oil to circulate through the engine effectively. Don’t switch on the AC immediately as it puts unnecessary load on the engine, instead wait till the car engine has warmed up. After two minutes, drive away gently, shifting gears at about 2000-2500 rpm depending on the car, not putting strain on the engine. Do this till you see the temperature gauge settle at the optimum running temperature or for the first 10 minutes of driving (if your car does not have a temperature gauge).

Shift gears at optimum rpm

Don’t over-rev the car in each gear. Shift at optimum shift points at between 2000-2500 rpm. In a car without a tachometer, follow the 10-20-30-40-50 rule – shifting at 10kmph from first to second, second to third at 20kmph and so on. Downshift to a lower gear at 1,500 rpm to prevent lugging the engine and keeping the car in the “power band” especially for diesel engines – as you’ll otherwise lose some boost from the turbocharger.

Constantly vary the rpm

Constantly varying the rpm is easy to achieve in city conditions, where vehicle speeds are constantly changing. But on the highway, one tends to settle down to a steady speed. Don’t do this for a new engine, as it needs to bed in effectively at various rpm levels.

Don’t exceed maximum recommended speed

Stay within the speed limit and you should be fine. Don’t exceed 100 kmph and/or 2,500 rpm for the first 1000km or more of driving the car. After that you can start slowly increasing the speed for short bursts at a time, and then slowing down to get the engine “used to” handling higher rpm ranges. Even after 2,500 km, don’t indulge in flat-out driving for extended periods of time.

Don’t be hard on the brakes

The brakes also need time to settle down. For the first 1000 km, try not to do any hard braking. Anticipate when you need to stop and gently apply the brakes instead of speeding up and braking hard. This will allow your brake pads to wear evenly against the brake discs. This will also ensure even tyre wear.

Let the engine cool before shutdown

When you park the car, don’t switch off the engine immediately. Let it idle for about 30 seconds before you turn it off – allowing for oil circulation to normalize. This is especially recommended throughout the life of a diesel engine as the turbocharger needs to spool down, and suddenly turning off the engine starves it of oil, which could lead to failure.

Change engine oil

Some cars recommend a first service at 1000 km, where the engine oil is changed. This is good practice, as the engine oil would have collected sludge, metal filings and impurities from the new engine and needs to be cleaned out. Even in cars that recommend a first service at 5,000km or 15,000km it is advisable to do a first oil change early and then stick to recommended intervals or slightly earlier (since Indian driving conditions are less than ideal). So if a car maker suggests changing engine oil and oil filter every 15,000km, it is good practice to change at every 10,000km instead. The same applies for the gearbox oil and engine coolant – change both every 20,000km.


Follow these points in the running-in period and your car will serve you well for a long time. Not only will the performance of the engine be good, you will also get good fuel economy from the car. Do share any more points you have about effectively running-in a car.


  1. experts-i’ve new dezire petrol and company says 10000,kms for first engine oil change,i requested them to change the oil but they said u don’t need to…so my car is almost ticked 3900 km…can i do it locally and which oil i need to use….suggest me ……the best .thanx

  2. Maruti has a tie-up with Servo and their engine oil is branded “Servo maruti genuine engine oil”. You can get this an any smaller Maruti ASC too. Else, a good brand to buy is Castrol GTX Magnatec 10W-40, semi-synthetic. Get a filter from a spares shop which is branded either MGP / Purolator / Bosch.

  3. Hi I bought a new swift dzire, one of my friend to check the power revved up to 3000 and above rpm in first n second gear for about 200 meters….does it would have hampered the engine in any way.please let me know. It has done only 350 kms. Before it it has been driven in a very safe rpm n speed

  4. The very most important factors that one must bear in mind at all times always is the Climatic conditions & Road Conditions in our country!! Manufacturers may dictate & specify their warranty stipulations & compliances upon us vehicle owners & so many do or do not follow them at all & may have faced problems eventually!! I too, do follow the manufacture’s specifications & compliances because of the warranty stipulatiions & limitations, wherein one does feels very, very reluctant as he or she may lose out on the warranty benefits from the manufacturer’s end little knowing that apart from the mechanical side even the Electronics & Electrical systems also very much come under the warranty cover too but, have very much noticed & observed most vehicle owners just without any second thoughts go right ahead with not just accessories installtions onto their vehicles but also installations of CNG Kits from outside vendors & then later whenever they face any sort of problems with the electrical or elctronic system & engine performance & visit the authorised service station to rectify the problems, the service advisor at the dealership’s works then surveys the whole vehicle & notices the various unauthorised accessory & CNG fitments been done on to their vehicles. He then immediately explains the whole jist of the situation & tells them the actual causes of the malfunction of the electrical or electronic sysytem or Engine’s optimum performance is due to the unauthorised external fitments being carried out in the respective vehicle & that the warranty on the electrical, electronics & the engine ceases with immediate effect & this is very very commonly noticed & experinced in either the first or the second service?!!! One should always bear in mind the warranty stipulations at all times. The Engine, Gear & Power Steering oil-Grades as specified in the manufacturer’s owner’s manual book should always be adhered to at all times. Even fitment of filters from external vendors should be carefully carried out as most filters may or may not be made as per the manufacturer’s specifications!! About the RUN-IN Period which i very firmly believe in no doubts at all, & according to me as that’s what i did especially for the engine to settle in well is that i drove it at a speed limit of 60km/Hr for the first 2500kms & thereafter at 80Km/Hr for the next 2500Kms. Driving at high speed exceeding 2000RPM when the vehicle is brand new will cause drastic wear & tear as well as Excessive unwanted load & performance from the engine!!! The very first component form the engine side to start giving way very drastically is the Turbo-Unit as the turbos for civilian vehicles are not made for any sort of High-Drag Performances AT ALL??!!! Turbo-Unit is no doubt an EXPENSIVE component, & hence should NOT BE heavily TAXED-UPON at all!!! DO NOT DO OR CARRY OUT ANY UNAUTHORISED WORK OR INSTALLATIONS DURING THE WARRANTY PERIOD AT ALL!!! Life of Synthetic engine oils is anywhere between 15000-20000Kms depending on the frequency of vehicle usage!! The more & regular cleaning of the air filter is done does enhance the life condition up to a certain limit, the better it is for the health of the engine. Engine oils that are not changed &n replaced regularly time to time should be thoroughly flushed with a very good brand of Flushing oils available in the market. PLEASE READ the Flushing Procedure INSTRUCTIONS CAREFULLY before carrying out the job as it’s a matter of an ENGINE ??!!! The vehicle should be standing in leveled position & not raised on a jack on one side at all when carrying out the flushing procedure!!!

  5. Nice article Roshun & Neil! Thanks for all the information. However, most of these points are to be followed even after the car has traveled 2500 Kms. as this would increase it’s life by another 50-60K Kms.

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