WoT 1.21 Common Test: Updated Vehicle WTR Rating

During the Common Test, you won’t see your current WTR rating from the live server. This is due to the fact that the Common Test WTR is based on your overall previous Common Test performance. Therefore, it may differ noticeably from your WTR rating on the live server. Your battles on the Common Test server do not affect your current WTR rating.

Vehicle WTR

Vehicle WTR is a scale created to evaluate your performance on each specific vehicle.

The formula for calculating vehicle rating is based on vehicle key stats and contains alpha (α) and beta (β) components.

Vehicle Key Stats

Vehicle rating is based on the following stats:

  1. Damage Dealt + Assist (DDA)
  2. Damage Blocked (DB)
  3. Number of Vehicles Destroyed per Battle aka Frags (F)
  4. Survivability (S)

The number of stats used in the WTR calculation can vary depending on a vehicle’s model, type, and role in battle. Each vehicle can have a minimum of 2 and up to 4 key stats.

Every stat has a scale, from min stat value up to max, divided into numerous segments. Each segment accommodates an equal number of players within its range. Your stat value on a specific vehicle determines the segment you belong to in relation to other players.

For example, if your average Survivability is low, you’ll end up in a low segment of the S scale. At the same time, your DB value is way above average, so you’ll get into a high segment of the DB scale.

Alpha Component

The alpha component determines the player’s performance on a given vehicle in relation to other players. The formula for calculating α is as follows:


α  — component that determines around 25% of the vehicle WTR value

i — one of the key stats of a specific vehicle

Σ — summation

AudienceV — audience coefficient for this vehicle

The coefficient is introduced to even out standard and Premium/promo vehicles with very similar technical characteristics, but different performance statistics among players. Since standard vehicles tend to accumulate a bigger audience of a various skill set, their average performance is quite low. Premium and other kinds of prized vehicles, however, attract a smaller yet more skilled audience; hence, their average performance is higher.

Segmenti — the stat segment you belong to

Segmentsi — total segment count for a specific stat

A — stat (i) coefficient

The max alpha value is equal to 1.

Beta Component

The beta component determines a player’s performance on a given vehicle in relation to the vehicle’s average performance on a server. The formula for calculating β is as follows:


β — component that determines around 75% of the vehicle WTR value

i  — one of the key stats of a specific vehicle

Σ — summation

NV— stat normalized value (player average stat value divided by server average stat value)

A— stat coefficient, which assesses vehicle key stat contribution to a positive battle outcome

AudienceV — audience coefficient for this vehicle

Beta_Norm and Beta_Offset— configurational values that determine the total weight of β in the final formula

The Survivability stat is not factored into beta calculations.

Final Formula

The final formula for calculating the vehicle rating is as follows:


WTRV  — vehicle WTR value

αV  — alpha component

βV  — beta component

αWeight, βWeight— configurational values

About the WTR Rating System

WTR is a rating system that calculates an individual rating for each vehicle and then uses the particular vehicle’s score to determine the player’s general efficiency level. This rating responds flexibly to changes of combat strategy as it evaluates your stats against average indicators across the server.

When calculating the rating of a specific vehicle, the following key indicators may be considered:

  • Damage caused + assist damage
  • Damage blocked
  • Number of destroyed enemy vehicles
  • Survival rate

The reworked Service Record page provides a better visualization of the WTR rating system and displays your performance progress in the game in a more understandable way. This will also make it easier for you to compare your own rating to other players’ ratings.

The dynamic WTR rating system changes according to your combat performance. That means that you can progress, but you can also lose points and roll back down.

You’ll also have the ability to customize your combat achievements on the main statistics page in a few clicks. Show off your favorite medals and other rare achievements that you are most proud of—and spark envy in other Commanders!

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