Engine power in horsepower (hp) - a key parameter that affects acceleration dynamics, maximum speed and even the cost of insurance. But how can you find out the real “horses” of your car if there is no sticker with numbers under the hood, and the documents indicate kilowatts? This article will help you understand all the nuances - from official sources to engineering calculations.

We have analyzed GOST R 52390-2005, technical regulations and the practice of auto experts in order to collect current methods for determining power. Important: some methods give nominal values (declared by the manufacturer), others - actual (taking into account engine wear). The difference can reach 10-15%!

1. Check by PTS or STS: the most reliable way

Vehicle documents are the primary source of power data. B vehicle passport (PTS) or registration certificate (CTC) look for the column "10. Engine power, hp (kW)". The numbers here are indicated in two units:

  • 📄 Horsepower (hp) - a traditional unit used in Russia to calculate transport tax.
  • ⚡ Kilowatts (kW) - international standard (1 kW ≈ 1.36 hp).

⚠️ Attention: In the PTS of some foreign cars (for example, Toyota or Volkswagen) power can only be indicated in kW. To convert it to hp, use the formula:

Power (hp) = Power (kW) × 1.35962

Example: if in PTS Ford Focus 1.6 Ti-VCT indicated 85 kW, then in horsepower it will be 85 × 1.35962 ≈ 115.5 hp. Round to the nearest whole number - 116 hp.

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If the PTS contains dashes or unreadable numbers, request a duplicate from the traffic police. The cost of the service is 800 rubles (2026).

2. Online check by VIN code: fast and free

VIN (Vehicle Identification Number) is a vehicle’s “passport” that allows you to find out exact factory engine power, including modifications for different markets. Where can I find the VIN?

  • 🔍 On the windshield (bottom driver's side).
  • 🚗 Under the hood (on the body data plate).
  • 📑 In PTS or STS (line "VIN (identification number)").

Enter the VIN into one of the verified services:

Service Link Pros Cons
Autocode autocode.ru Shows power history (if the engine has been changed) Paid full report (RUB 390)
VIN-Info vin-info.ru Free Basic Information No data on tuned cars
CarVertical carvertical.com Checks power according to the manufacturer's database English interface

⚠️ Attention: If the service shows power 10-20% lower than in the title, this may mean that the engine was replaced with a less powerful one (for example, after an accident). Check your car history via traffic police or Insurance register.

📊 How often do you check the power of your car?
Only upon purchase
Once a year
Never checked
I don't know how to do this

3. Calculation by engine volume: engineering method

If the documents are lost and the VIN is not readable, you can approximately calculate the power by engine displacement. The formula is based on empirical data for gasoline and diesel engines:



For gasoline internal combustion engines:


Power (hp) ≈ (Volume in liters × 70) ± 10%



For diesel internal combustion engines:


Power (hp) ≈ (Volume in liters × 50) ± 10%

Examples:

  • 🔥 Lada Granta 1.6 (1596 cm³): 1.6 × 70 = 112 hp (actually 106 hp - error 5%).
  • ☁️ Renault Duster 1.5 dCi: 1.5 × 50 = 75 hp (actually 90 hp - turbodiesel gives + 20%).

⚠️ Attention: The method only works for atmospheric engines without turbines! For turbo engines (TFSI, TSI, EcoBoost) add 25-30% to the calculated value.

Why is the formula inaccurate?

Power depends on the compression ratio, injection system, valve timing and other parameters. For example, Mazda Skyactiv-G 2.0 produces 150 hp with a volume of 2.0 liters due to the high compression ratio (14:1), although according to the formula it would only produce 140 hp.

4. Diagnostic equipment: real power measurement

If you need to know current power (taking into account engine wear), use:

  • 🔧 Dynamometric stand — measures the power at the wheels with an error of ±2%. Cost: 1,500–3,000 rub.
  • 📊 OBD-II scanner (for example, ELM327) - reads data from the ECU. Accuracy: ±5%. Price: from 500 rub.
  • 🔬 Mobile applications (Torque Pro, OBD Car Doctor) - work via a Bluetooth adapter.

📌 How to take a measurement:

Make sure the engine is warmed up to 90°C|

Turn off the air conditioner and other energy consumers |

Use fuel not lower than AI-95|

Take 3 measurements and take the average value -->

Example of a report from a dynamometer for BMW 320i (N20):

Claimed power: 184 hp


Actual power: 172 hp (loss 6.5%)


Reason: turbine wear and clogged fuel injectors.

5. Check by make and model: manufacturer databases

Each automaker publishes technical specifications of its models. You can find them:

  • 🌍 On official website brand (section "Technical data").
  • 📖 B spare parts catalogs (ETKA for VW/Audi, EPC for Mercedes).
  • 📊 B databases (AutoData, Mitchell 1).

Example for Hyundai Solaris 1.6 (G4FC):

Year of manufacture Power (hp) Torque (Nm)
2010–2014 123 156
2015–2017 128 157
2018–2021 123 151

⚠️ Attention: Power may vary for one engine in different bodies! For example, 1.4 TSI (EA211) in Skoda Octavia produces 150 hp, and in VW Polo - 140 hp due to different ECU firmware.

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Always check the VIN with the manufacturer's database - the same model could be equipped with engines of different power (for example, Kia Rio 1.6 comes with 123 and 128 hp).

6. Alternative methods: when all else fails

If the standard methods don't work, try:

  • 🔎 Search by engine number — there is a metal plate with a code on the cylinder block (for example, G4KD for Kia/Hyundai). Enter it into the search engine with the addition of the word «specs».
  • 📞 Contacting an official dealer — provide the VIN, and they will send an extract from the factory database (paid service, ~1,000 rubles).
  • 🛠️ Engine disassembly - last resort method. From the diameter of the cylinders and the stroke of the piston, the volume and then the power can be calculated (see section 3).

📌 Advice for owners of old cars (before 2000): Power could be specified in SAE horsepower (American) or DIN (European). The difference between them is up to 10 hp! Check the standard in the technical documentation.

7. Common mistakes and how to avoid them

When determining power, car owners are often faced with:

  • 🔄 Confusion between "gross" and "net":
    • Gross — power on the flywheel (increased by 10-15%).
    • Net — power at the wheels (real).
  • ⚖️ Not taking into account tuning: Chip tuning can add 20-30 hp, but this will not be reflected in the documents.
  • 🔧 Ignoring wear and tear: An engine with a mileage of 200+ thousand km loses up to 15% of power.

⚠️ Attention: If when checking through traffic police or insurance It turned out that the capacity in the PTS is underestimated (for example, to reduce taxes), you can be fined 500–2,000 rubles. according to Art. 12.1 Code of Administrative Offences. Check the data before buying a used car!

FAQ: Answers to frequently asked questions

Is it possible to find out the power by the body number?

No, body number (VIN) contains information about the model and year of manufacture, but not about the engine. To accurately determine power, you need either the full VIN or data from the engine plate.

Why are the numbers on the PTS and on the manufacturer’s website different?

This may be due to:

  • Different measurement standards (DIN, SAE, ECE).
  • Engine modifications for a specific market (e.g. euro-5 vs. Euro-6).
  • Errors when preparing documents (less often).
How to check the power of an electric car?

For electric cars, power is indicated in kW and converted to hp. according to the same principle (1 kW = 1.36 hp). For example, Tesla Model 3 Long Range has 283 kW, which is equal to 283 × 1.36 ≈ 385 hp. Data is taken from "Technical passport" or manufacturer's applications.

What to do if the power in the PTS is clearly underestimated?

Contact traffic police with a request for amendments. You will need:

  • Conclusion from an official dealer or expert about real power.
  • Receipt for payment of state duty (800 rubles).
  • Passport and PTS.

The procedure takes 5–10 business days.

Does power affect the cost of compulsory motor insurance?

Yes, but indirectly. Insurance companies take into account:

  • Engine capacity (the larger, the more expensive the policy).
  • Model and year of manufacture (powerful cars are more likely to get into accidents).

The power itself is in hp. OSAGO does not affect the price, but may increase the cost CASCO (risk of theft or damage is higher).