diff --git a/README.md b/README.md
index 41b6b23..04c3e4d 100644
--- a/README.md
+++ b/README.md
@@ -158,6 +158,12 @@ Backend проверяет подпись Telegram, создает/обновл
 - `POST /api/ocr/license-plate`
 - `POST /api/ocr/vin`
 - `POST /api/ocr/service-document`
+- `GET /api/me/achievements`
+- `GET /api/my/vehicles/{vehicle_id}/score`
+- `GET /api/my/vehicles/{vehicle_id}/timeline`
+- `GET /api/service-centers/{service_center_id}/trust-score`
+
+CarPass quality and trust scores are backend-owned. The scoring engine in `app/services/scoring.py` calculates vehicle profile completeness, verified maintenance history, maintenance health, service-center trust, evidence-style achievements, and cooldown-protected engagement events. Frontend only displays the result.
 
 Расход топлива считается по интервалам между полными баками (`is_full_tank=true`). Если данных мало, API возвращает `null`, а не выдуманную цифру.
 
diff --git a/app/api/gamification.py b/app/api/gamification.py
index 57acacc..3fec878 100644
--- a/app/api/gamification.py
+++ b/app/api/gamification.py
@@ -22,6 +22,7 @@ from app.services.scoring import (
     compute_service_center_score,
     compute_vehicle_score,
     evaluate_garage_achievements,
+    record_engagement_event,
 )
 
 router = APIRouter(tags=["gamification"])
@@ -64,6 +65,13 @@ async def vehicle_score(
 ):
     car = await ensure_vehicle_owner_or_access(session, vehicle_id, current_user)
     score = await compute_vehicle_score(session, car)
+    await record_engagement_event(
+        session,
+        event_type="vehicle_score_viewed",
+        user_id=current_user.id,
+        vehicle_id=vehicle_id,
+        metadata={"completeness_score": score.completeness_score},
+    )
     await session.commit()
     await session.refresh(score)
     return score
@@ -82,6 +90,12 @@ async def vehicle_timeline(
     limit = min(limit, 200)
     offset = max(offset, 0)
     car = await ensure_vehicle_owner_or_access(session, vehicle_id, current_user)
+    await record_engagement_event(
+        session,
+        event_type="vehicle_timeline_viewed",
+        user_id=current_user.id,
+        vehicle_id=vehicle_id,
+    )
     fuel_entries = list((await session.execute(select(FuelEntry).where(FuelEntry.car_id == car.id))).scalars())
     service_entries = list((await session.execute(select(ServiceEntry).where(ServiceEntry.car_id == car.id))).scalars())
     visits = list((await session.execute(select(ServiceVisit).where(ServiceVisit.vehicle_id == car.id))).scalars())
@@ -179,6 +193,13 @@ async def service_center_trust_score(
         raise HTTPException(status_code=404, detail="Service center not found")
     await ensure_service_employee(session, service_center_id, current_user)
     score = await compute_service_center_score(session, center)
+    await record_engagement_event(
+        session,
+        event_type="service_trust_score_viewed",
+        user_id=current_user.id,
+        service_center_id=service_center_id,
+        metadata={"trust_score": score.trust_score, "trust_level": score.trust_level},
+    )
     await session.commit()
     await session.refresh(score)
     return score
diff --git a/app/services/scoring.py b/app/services/scoring.py
index 3ca4aad..9ce326d 100644
--- a/app/services/scoring.py
+++ b/app/services/scoring.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from dataclasses import dataclass
-from datetime import date
+from datetime import UTC, date, datetime, timedelta
 from decimal import Decimal
 
 from sqlalchemy import func, select
@@ -327,6 +327,41 @@ async def unlock_achievement(
     )
 
 
+async def record_engagement_event(
+    session: AsyncSession,
+    *,
+    event_type: str,
+    user_id: int | None = None,
+    vehicle_id: int | None = None,
+    service_center_id: int | None = None,
+    metadata: dict | None = None,
+    cooldown_minutes: int = 360,
+) -> None:
+    since = datetime.now(UTC) - timedelta(minutes=cooldown_minutes)
+    result = await session.execute(
+        select(EngagementEvent).where(
+            EngagementEvent.event_type == event_type,
+            EngagementEvent.user_id.is_(None) if user_id is None else EngagementEvent.user_id == user_id,
+            EngagementEvent.vehicle_id.is_(None) if vehicle_id is None else EngagementEvent.vehicle_id == vehicle_id,
+            EngagementEvent.service_center_id.is_(None)
+            if service_center_id is None
+            else EngagementEvent.service_center_id == service_center_id,
+            EngagementEvent.created_at >= since,
+        )
+    )
+    if result.scalar_one_or_none() is not None:
+        return
+    session.add(
+        EngagementEvent(
+            user_id=user_id,
+            vehicle_id=vehicle_id,
+            service_center_id=service_center_id,
+            event_type=event_type,
+            metadata_json=metadata,
+        )
+    )
+
+
 async def evaluate_vehicle_achievements(
     session: AsyncSession,
     car: Car,
diff --git a/web/static/app.js b/web/static/app.js
index 0fda144..595a862 100644
--- a/web/static/app.js
+++ b/web/static/app.js
@@ -803,7 +803,16 @@ function openCarProfile() {
 }
 
 async function loadServiceCenters() {
-  state.serviceCenters = await api("/service-centers/my");
+  const centers = await api("/service-centers/my");
+  state.serviceCenters = await Promise.all(
+    centers.map(async (center) => {
+      try {
+        return { ...center, trust_score: await api(`/service-centers/${center.id}/trust-score`) };
+      } catch (_) {
+        return center;
+      }
+    }),
+  );
   renderServiceCenters();
 }
 
@@ -821,12 +830,23 @@ function renderServiceCenters() {
           <strong>${center.display_name || center.name}</strong>
           <small>${[center.city, center.address].filter(Boolean).join(", ") || "Адрес не указан"}</small>
           <small>Статус: ${center.verification_status}</small>
+          ${center.trust_score ? `<span class="trust-badge">${trustLabel(center.trust_score.trust_level)} · ${center.trust_score.trust_score}/100</span>` : ""}
         </div>
       `,
     )
     .join("");
 }
 
+function trustLabel(level) {
+  const labels = {
+    new_service: "Новый сервис",
+    verified_service: "Проверенный сервис",
+    reliable_service: "Надежный сервис",
+    high_confidence_service: "Высокое доверие",
+  };
+  return labels[level] || "Новый сервис";
+}
+
 function renderPlaceholderList(selector, message) {
   const root = document.querySelector(selector);
   if (root) root.innerHTML = `<div class="empty">${message}</div>`;
diff --git a/web/static/styles.css b/web/static/styles.css
index 1b8e4d2..a6ad5a1 100644
--- a/web/static/styles.css
+++ b/web/static/styles.css
@@ -1373,6 +1373,17 @@ select {
   color: var(--muted);
 }
 
+.trust-badge {
+  width: fit-content;
+  padding: 5px 8px;
+  color: #17362f;
+  border: 1px solid rgba(22, 128, 106, 0.2);
+  border-radius: 8px;
+  background: rgba(94, 224, 189, 0.18);
+  font-size: 12px;
+  font-weight: 700;
+}
+
 @keyframes toastIn {
   from {
     opacity: 0;