A new test confirmed the 644 km power reserve of the Tesla Model S


The latest version of Model S – Long Range Plus – was introduced in early 2020. During the EPA tests, its run on a single charge was estimated at 630 km. Around the same time, Ilon Mask reported that his company cars are close to reach a range of 644 km (the coveted 400 miles).

Ilona Mask’s goal of creating an electric vehicle with a power reserve of 400 miles (644 km) is likely to be achieved very soon. As of February 15, the Tesla Model S has a new Long Range Plus kit to replace the Long Range, which is no longer in the configurator. The mileage on a fully charged battery is now about 630 km, which is almost 28 km more than the Long Range.

Tesla S
Tesla S

The Model X electric crossover also has a similar version. It now has a cruising range of 565 km, which means it can travel 37 km further than the previous version. However, updated specifications of both the sedan and crossover have not yet appeared on the website of the U.S. Environmental Protection Agency (EPA).

The Tesla company has reported, due to what technical solutions Model S and Model X received additional kilometers of travel on one charge. The only visible change accompanying the addition of the word “Plus” to the equipment name is the new design of the 19-inch rims for the Model S. Most likely, improvements in the equipment of cars have been made earlier, and the new versions are associated with the optimization of the software.

As Ilon Mask explained in his Twitter posting, all of the Model S and Xs released in the past few months can actually go more than stated in their EPA specifications. Therefore, after a free software update “by air” they will also have a power reserve, like the versions of Long Range Plus.

At the moment this package is the basic one for Model S and Model X. And with its appearance, the cost of electric cars has not changed. As before, the price of a premium sedan in the configurator on the official website of Tesla in the U.S. will start at $79990 without discounts, and the Model X crossover – from $84990.

Thus, in eight years of production, the power reserve for the Model S has increased by more than 200 km (from 426 to 627 km) when measured in accordance with EPA standards. However, it is not always possible to achieve this mileage in real life. For example, in the test carried out by the Car And Driver edition, Tesla Model S Performance drove only 357 km out of the 560 km claimed by the EPA at 120 km/h on a continuous track.

The changes, which allowed an increase by 28 km in maximum mileage without a recharge compared to the previous modification, were introduced gradually over the past year. Therefore, to launch the new Tesla version, it was enough to change the name of the car and pass the tests again, perhaps by updating the software beforehand.

Tesla Car

When presenting the results for the first quarter of 2020, Ilon Mask announced that the Model S in the current version can overcome 644 km on one charge. However, this figure was not obtained because an error was made when testing on the EPA cycle.

According to the general manager of Tesla, the U.S. EPA experts who conducted the test during the cyclic test left the key inside the machine and did not close the door. This resulted in increased energy consumption, as the electric vehicle could not go into sleep mode.

Representatives of the EPA deny it, but Ilon Mask believes that if the test is repeated, the power reserve of 644 km will be officially confirmed.

Tesla Car

Norwegian video blogger Bjorn Neeland, who often tests electric cars, decided to check the power reserve of the Model S. Judging by the video he published, after he drove the Tesla Model S Raven 617 km, the battery charge level was 4%. That is, with a full battery discharge, the 644 km could well be achieved.

During the test at 15-17 °C, Bjorn Neeland drove at a constant speed of 90 km/h, although in some places he was allowed to drive 20 km/h faster. The electricity consumption was 145 Wt/h/km.

Interestingly, the Porsche Taycan tested by Björn Neeland showed 172 Wh/km in a similar test. It is true that the Taycan was a little colder during the test, but this does not explain this significant difference in energy efficiency.

Although Björn Neeland’s test cannot be accepted to disprove the official EPA results and does not fully correspond to the actual operating conditions, it does lead to an important conclusion: the Tesla Model S can drive 644 km without a recharge if you drive at 90 km/h.

And brand new, but not yet proven: The new Tesla Model S record – 900 km run on one charge

Two years ago, Casey Spencer set a seemingly impossible record. He drove the Tesla Model S 810 km through the territory of two states, which at that time was 82 km higher than the previous achievement of Norwegians Bjorn Neeland and Morgan Torvolt and 376 km higher than the passport characteristics of the car. The electric car, which Casey was driving, had an average speed of about 30 kilometres per hour.

And a few days ago, Belgians Stephen Peters and Joery Kools set a new world record for the range of the Tesla Model S P100D without recharging. In less than 24 hours, they drove the 901.2 kilometres. They’re reporting this on the Silver Lining blog.

New Test
New Test

To set a record, they laid a ringed route of 26 kilometers along the roads of the village of Doole in East Flanders province. To warn other road users that the car is participating in an experiment, a large plate with the inscription “Test” has been affixed to the rear window. As Peters and Kools have found out, the Model S shows the greatest economy at 40 kilometers per hour. So they tried to stick to that speed for the whole route.

To set the record, they laid a ringed route of 26 kilometers along the roads of the village of Doole in East Flanders province. To warn other road users that the car was participating in the experiment, a large plate with the inscription “Test” was put on the rear window. As Peters and Kools have found out, the Model S shows the greatest economy at 40 kilometers per hour. So they tried to stick to that speed for the whole route.

As a result, the battery power was enough for 23 hours and 45 minutes. The power plant consumed 97.4 kilowatt-hours of energy, and the average consumption was 108 watts per kilometer.

The Tesla Model S P100D is equipped with a 100 kilowatt hour battery pack. From a site up to 96 kilometers per hour, this Ludicrous-activated maximum capacity machine accelerates in 2.5 seconds. Last year, the U.S. Environmental Protection Agency (EPA) confirmed that the electric vehicle has a power reserve of 315 miles (507 kilometers).

Air filter replacement


Timely replacement of the air filter ensures normal operation of the internal combustion engine. This applies to internal combustion engines using both petrol and diesel fuel. The point is that in order to burn one liter of fuel, the power unit needs up to 15 liters of atmospheric air (the volume depends on the engine power, fuel used, including its quality, state of the ignition system, etc.). Therefore, the filter should not only perform its direct air purification work, but also not prevent it from entering the fuel path. This is a key fact in determining the need and timeliness of the engine air filter replacement.

This is done primarily through clear maintenance regulations with a frequency of 15 … 20,000 km. And independently at home. The only exceptions are new cars which during the run-in period are serviced exclusively at an official service station.

Signs of air filter clogging

air filter
air filter

Despite the fact that there are different filters and they are installed on different engines, the signs of their clogging are almost the same.

  • Reduced engine power (lower thrust).
  • Decrease in the dynamic characteristics of the machine (it is weakly accelerating with increasing engine speed).
  • Increase in fuel consumption.
  • Activation of the Check Engine bulb, which can be caused by both a direct error indicating filter clogging, and a violation of the fuel-air mixture (its significant enrichment with fuel, error P0172).
  • Significant concentration of toxic substances in exhaust fumes.

In some cases, if the air filter is contaminated, there may be increased humming of the engine.

However, the above mentioned factors may be signs of other malfunctions, but it is desirable to perform the filter check as well, moreover, it is not difficult and short time to do it.

Why is it necessary to replace the air filter

There are several typical reasons why it is necessary to change the engine air filter. Among them:

  • Scheduled replacement. Each car manufacturer individually indicates the mileage or time it takes to change the vehicle’s air filter. Usually the corresponding mileage is within 15…20 thousand kilometers.
  • Unscheduled pollution. This can be caused by either poor quality filter material used in the device, or a long drive in contaminated air conditions (dusty conditions such as sand, dirt, etc.).
  • Mechanical damage. It can be caused by improper installation, an emergency situation in the engine (in the duct), a large particle hitting the filter, which caused the filter material to fail, damage to the filter during other repair work.

Regardless of what exactly caused the failure of the device, replacement of the internal combustion engine air filter will first of all eliminate the troubles described above and also prevent their possible appearance in the future.

Constant ride on enriched mixture reduces engine life (due to the fact that the dust in the cylinders acts as an abrasive material). Therefore, timely replacement of the air filter is not only a repair, but also a preventive measure that allows to operate the machine engine in normal mode.

Car on road

Frequency of replacement

Before proceeding to general considerations, it is necessary to indicate that the exact frequency of air filter replacement can be found in the manual or in the technical documentation for your vehicle. In addition, there are a number of other objective factors that affect the values mentioned. Among them are operating conditions, the use of different filters, as well as differences in engine type – for gasoline and diesel engines they are different.

For cars with an injector, for diesel engines, and especially for diesel engines with turbocharger, mileage for an air filter to replace after how long it should be done is reduced by 20 … 30%, for diesel engines with a turbine even by 50%.

In most cases, on gasoline engines, the air filter is replaced after 15…20 thousand kilometers of mileage. On diesel engines, respectively, in 10…15 thousand kilometers. However, according to numerous reviews of domestic car owners, especially those who live in large metropolitan areas and industrial areas, the mileage specified in the manual should be reduced up to two times. Therefore, if your car showed these typical signs of clogged filter, it makes sense to check its condition, and if necessary, replace it.

Air Filter
Air Filter

As for diesel engines, there is no throttle on them. Because of that, their air consumption is much higher. And if a diesel engine also has a turbine, it more actively sucks air from the atmosphere, which in itself speeds up filter clogging. The same reasoning is true for cars equipped with mechanical blowers (for example, some models from manufacturers Honda, Mini Cooper, Volkswagen, Audi, Mercedes Benz).

Many motorists combine replacement of an air filter and replacement of oil in the engine (that is, every 10 … 15 thousand kilometers of mileage).

Ways of replacement

There are two main ways to replace the air filter. The first is to delegate this procedure to the masters at the service station. However, due to its obviousness, we will not consider it. Let’s tell only that cost of such replacement is usually calculated on norm hours (each technical center can have its own method of calculation and various norms based on specificity of work and mark of the machine) and cost of the filter itself. And often service centers force car owners to buy filters only on the spot, and their price there can be higher than the market. On average, this is from 0.2 to 0.5 n/h, with a cost of 1800 rubles per 1 standard hour of operation, and in some cases the price of such a procedure is included in the cost of oil change.

The second way is to perform the procedure on your own. By money it is much more economical, because in this case you pay only directly for the filter itself. And where to buy an air filter is cheap – only you decide. The procedure is not complicated, but to perform it you need special tools.

Instructions for replacing the air filter with your own hands.

First of all, the required tools and materials must be assembled to start the engine air filter replacement procedure. Among them:

Type air filters
Type air filters
  • a new air filter (when buying, make sure that it is exactly the same size as your car, it may not necessarily be original);
  • a flat sting screwdriver (you may or may not need a flat stinger instead, depending on the type of filter box cover attachment);
  • a clean rag;
  • a compressor (preferably, but without it you can do without it);
  • a dust brush (also optional).

On some cars, the body is additionally fixed in the seat by means of fasteners, bolts, plastic latches and metal clips… In this case, it is necessary to take care of the tool availability. On “Kangoo” car the cover of the filter box is fixed with bolts under “Torex” T27 or with a star.

Naturally, each car (and sometimes the same model, but with different engines) will have its own features in the attachment of the filter box and some nuances. However, in most cases (given that the procedure for replacing the filter is not complicated), the algorithm of actions will be as follows:

  1. Install the car on a flat surface, put it on the handbrake and shut down the engine.
  2. Open the bonnet.
  3. Unscrew the screws securing the air filter cover and then remove it.
  4. Carefully remove the old air filter so that dust and debris from it does not enter the air line or other parts of the hood.
  5. Close the inlet spigot with a rag.
  6. Use the compressor to blow dust out of the air filter housing. Use a brush instead of the compressor or combine both.
  7. Remove the rags from the air inlet connection.
  8. Install the new filter on its seat.
  9. Assemble the structure in reverse order.

In extreme cases, you can try to clean the old air filter as much as possible instead of buying a new one. However, this is only suitable if it is not possible to buy a new spare part.