📘 TrueCostAuto Full User Manual & Operating Guide (Full Manual)

Welcome to TrueCostAuto. This comprehensive manual delivers end-to-end interface guidance, parameter definitions, actuarial financial models, and advanced configuration techniques to help you uncover the true Total Cost of Ownership (TCO) of any vehicle and make rational, confident decisions tailored to your personal lifestyle.

📑 Manual Outline

1. Core Concepts & Quantitative Models
2. Quick Start: Build & Analyze Your First Vehicle in Three Steps
3. Garage Management & Parameter Configuration
4. Decoding the TCO Cost Analysis Dashboard
5. Multi-Vehicle Side-by-Side Comparison & Decision Analysis
6. Regional Presets & Measurement Units Configuration
7. Data Backup, Restore, and Privacy Safeguards
8. Membership Entitlements & Offline Guarantees

1. Core Concepts & Quantitative Models

Before diving into operational specifics, familiarize yourself with TrueCostAuto’s two proprietary quantitative financial models:

1.1 TCO True Net Cost Model (Total Cost of Ownership)

Purchasing a vehicle extends far beyond paying the dealer invoice price. TrueCostAuto discards simplistic single-item tallies in favor of a rigorous True Net Cost accounting framework:

$\text{True Net Cost} = \text{Total Cash Outflow} + \text{Hidden Financing Cost} - \text{Estimated Resale Value}$

• Total Cash Outflow: The cumulative sum of all actual out-of-pocket cash paid across the ownership cycle (on-road purchase expenses, electricity charging/gasoline, auto insurance, routine maintenance, highway tolls, and daily parking/washing);
• + Hidden Financing Cost: The opportunity cost of forgone interest yields had cash paid outright been invested in low-risk financial instruments, or cumulative loan interest paid under financing terms;
• - Estimated Resale Value: The estimated fair market cash value returned to your wallet when selling the car at the end of your ownership horizon;
• = True Net Cost: The actual financial wealth consumed by owning and operating the vehicle across your chosen duration.

1.2 Purchase Recommendability Score (PRS)

Car buying combines cold financial discipline with personal aesthetics and emotional satisfaction. TrueCostAuto introduces the proprietary PRS rating framework:

$\text{PRS} = (\text{Financial Score} \times \text{Cost Weight}) + (\text{Preference Factor Score} \times (1 - \text{Cost Weight}))$

• Balancing Savings and Driving Enjoyment: Places objective financial ownership burden and subjective preference ratings on opposite sides of a scale. By adjusting the weight slider (defaults to 50% / 50%), you pinpoint the vehicle that respects your budget while sparking genuine driving joy.

2. Quick Start: Build & Analyze Your First Vehicle in Three Steps

Step 1: Confirm Regional Presets

1. Tap the Presets tab in the bottom navigation bar;
2. In the dropdown menu, select your country or region (supporting 20+ major automotive markets including the United States, Germany, Japan, United Kingdom, Canada, Australia, France, China, etc.);
3. The app automatically aligns regional currency symbols ($, €, ¥, etc.), measurement units (km vs. miles, L vs. gal), local fuel/electricity averages, transit tolls, and depreciation curves.

Step 2: Add a Vehicle Profile

1. Tap the Garage tab in the bottom bar and touch the floating 「+ (Add Vehicle)」 button in the bottom dock;
2. Powertrain & Condition: Choose Battery Electric (EV), Gasoline (Gas), or Plug-in Hybrid (Hybrid), and specify New or Pre-owned / Used;
3. Acquisition Price: Enter the negotiated vehicle purchase price; the system automatically populates statutory sales tax and first-year insurance benchmarks;
4. Usage Profile: Input your anticipated annual mileage (e.g., 12,000 miles or 15,000 km), planned ownership duration (e.g., 5 or 8 years), and rated fuel/electric consumption;
5. Subjective Scoring (Optional): Rate factors you care about (e.g., seat comfort, driver assistance, battery safety) from $-10$ to $+10$;
6. Tap Save in the top right corner.

Step 3: Inspect the Comprehensive TCO Analysis Report

1. Tap on the newly created vehicle card in your Garage list to open its Analysis report;
2. The top hero card instantly delivers the vehicle’s True Net Cost, automatically amortized into four high-frequency operational metrics: Cost per km / mile, Monthly Cost, Daily Cost, and Initial Purchase Cost;
3. Scroll down to review annual operating cards, actuarial depreciation schedules, hidden opportunity costs, expenditure breakdown donut charts, 5-dimensional health radars, and optimal vehicle replacement curves.

3. Garage Management & Parameter Configuration

3.1 Vehicle Card Gestures & Bottom Dock Controls

• Card Swipe Left Gesture: Swipe left on any vehicle card in the list to reveal three instant actions:
  • 📋 Duplicate: Clone the current configuration with one tap—ideal for evaluating different trims or comparing cash vs. loan options for the exact same model;
  • ✏️ Edit: Quickly modify vehicle price, insurance, or consumption parameters;
  • 🗑️ Delete: Remove candidate profiles from your garage;
• Bottom Dock Bar:
  • + Button: Quickly create new vehicle profiles;
  • PK Button: Select multiple vehicles to initiate a head-to-head comparison arena.

3.2 Powertrain-Specific Parameter Setup

• Battery Electric Vehicles (EV):
  • Input rated electric consumption (kWh/100km or mi/kWh);
  • Adjust the Range Efficiency % slider: Lower it to 70%–85% for freezing winter conditions, highway drag, or aggressive cabin climate control, prompting the engine to dynamically recalculate effective consumption;
• Internal Combustion Engine (Gas):
  • Enter combined real-world fuel consumption (L/100km or MPG);
• Plug-in Hybrid & Range Extenders (Hybrid / PHEV / EREV):
  • Enter both electric consumption and depleted-battery fuel consumption;
  • Adjust the EV Usage Ratio % slider: Accurately specify your real-world balance between daily electric commuting (e.g., 80%) and weekend highway gasoline trips (e.g., 20%).

4. Decoding the TCO Cost Analysis Dashboard

Inside the vehicle details screen, the report unfolds across structured analytical cards:

1. TCO Core Dashboard and Four Key Metrics:
   • The fundamental actuarial equation: Total Cash Outflow + Hidden Costs - Resale Value = True Net Cost;
   • Amortized into per-mile/km, monthly, daily, and on-road acquisition figures;
   • Features automated Decision Insights tailored to the model’s profile;
2. Annual Operating Costs:
   • Itemizes fuel/electricity energy costs, highway tolls, periodic servicing, amortized insurance, and parking/care;
   • Generates a pure operational cost per unit distance excluding depreciation;
3. Asset Depreciation & Residual Value Actuarial Modeling:
   • Rigorously models automotive finance depreciation: $\text{Annual Depreciation} = \frac{\text{Purchase Price} - \text{Estimated Residual Value}}{\text{Ownership Duration (Years)}}$
   • Maps the initial 1st-year drop (e.g., 18%–20%), subsequent compounding decay (e.g., 8%/year), and terminal salvage floors (e.g., 12%–15%);
4. Initial On-Road Acquisition Costs:
   • Vehicle selling price, statutory sales tax (with clean vehicle exemptions), first-year insurance, and documentation/title charges;
5. Opportunity Cost of Capital & Financing Interest (Hidden Costs):
   • Cash Mode Opportunity Cost: Lost yields from cash diverted away from safe investments;
   • Auto Loan Interest: Cumulative interest paid to lending institutions over the financing term;
6. Real-World Consumption & Efficiency Analysis:
   • Displays combined consumption and energy efficiency metrics (km/L, MPG, km/kWh, mi/kWh);
7. Subjective Trade-Offs & Annual Expenditure Donut Chart:
   • 13 subjective factor audit summarizing personal satisfaction;
   • Donut chart displaying the percentage distribution among depreciation, energy, fixed overhead, and opportunity loss;
8. 5-Dimensional Health Radar & Optimal Replacement Timing:
   • 5D Audit: Evaluates depreciation control, reliability, energy efficiency, maintenance burden, and resale retention (with an aggregate health score);
   • Holding Cost Trend Curve: Visualizes the downward curve of annual average costs over 1–9 years, pinpointing the golden year to trade in or sell.

5. Multi-Vehicle Side-by-Side Comparison & Decision Analysis

Select multiple vehicles in your garage and tap the PK button in the dock to open the comparative arena:

1. Comparison Overview (PK): Aligns powertrain types, vehicle condition, lifetime TCO, and holding periods side by side (Free edition supports 2 vehicles; Pro edition expands up to 16);
2. Vehicle Recommendations & PRS Star Rankings:
   • Automatically identifies the Top 1 overall winning model;
   • Drag the Preference Tuning Slider to dynamically re-rank candidates;
3. 65+ Metric Objective Matrix & Custom Factor Extensions:
   • Preconfigured with 65 deep metrics (battery safety, braking, seat ergonomics, driver assistance, warranty) color-coded for fast inspection;
   • Extensible with Custom Factors: Tap + Add Factor to add personalized dimensions (child seat ease, V2L camping output, etc.), automatically calculated with normalized mathematical weighting;
4. Mileage-Cost Sensitivity Analysis:
   • Plots annual operating cost curves across varying distances (1k to 30k mi/year or km/year);
   • Intersection Point (Break-even Point): Graphically answers: “How many miles must I drive each year to repay the purchase price premium of an EV or hybrid?”;
5. Lifetime Cumulative TCO Sensitivity: Illustrates the compounding financial gap over an 8-year ownership horizon;
6. Stacked Cost Component Bar Charts: Dissects fuel, depreciation, insurance, opportunity costs, and servicing into a 6-color bar chart, exposing major cost culprits;
7. One-Click High-Resolution Summary Export: Tap the top share icon to render a consolidated vertical infographic with QR verification codes for family consultations.

6. Regional Presets & Measurement Units Configuration

Navigate to the Presets tab to calibrate your local economic environment:

• 20+ Built-In Global Country Presets: Switch instantly among North American, European, and Asian markets;
• Customizable Units of Measure:
  • Currency Symbols: $, ¥, €, £, C$, Mex$, and more;
  • Distance: Kilometers (km) and Miles (mi);
  • Fuel Volume: Liters (L) and Gallons (gal);
  • Electrical Metric: Kilowatt-hours (kWh);
• Energy & Toll Baselines: Set regional benchmark fuel prices, charging rates, highway driving ratios, and toll rates;
• Financial & Depreciation Baselines: Set opportunity interest yields, loan APRs, and 0–15 year depreciation decay curves;
• Centralized Custom Factor Management: Custom factors defined in Presets automatically propagate to all vehicle profiles and comparison matrices;
• Decoupled Language & Geography: Display UI text in your native language while anchoring economic math to your local driving region.

7. Data Backup, Restore, and Privacy Safeguards

In the Settings tab, TrueCostAuto executes a “Local-First & Absolute Privacy” architecture:

• 100% On-Device Local Storage: Vehicle records and financial inputs are stored strictly inside your phone’s encrypted sandbox, with zero cloud uploads and no registration requirements;
• Ultra-Compact Backup Engine (Backup Data):
  • Backups store only raw mathematical inputs, stripping out bulky rendered charts to reduce file size by over 70% (tens of kilobytes);
  • Export in seconds to Apple Files, Google Drive, iCloud, or share via messaging apps;
• Dynamic Recalculation on Restore (Restore Data):
  • When importing a backup into a new device, the app recalculates all depreciation schedules, TCO models, and radar charts using the latest actuarial engine;
  • Preserves mathematical precision across app versions without legacy data corruption.

8. Membership Entitlements & Offline Guarantees

8.1 Membership Tiers

• Free Tier: Manage up to 2 vehicle profiles, perform 2-vehicle PK comparisons, and run core TCO actuarial calculations;
• Pro Tier (Pro / Lifetime): Store up to 16 vehicles (unlimited for Lifetime), access full multi-vehicle comparison leaderboards, utilize lifetime mileage sensitivity curves, and enjoy an ad-free experience.

8.2 One-Tap Purchase Restore (Restore Purchase)

When migrating devices, tap Restore Purchase in the Settings tab to verify your store receipt and restore your Pro or Lifetime access without re-billing.

8.3 7-Day Offline Grace Period

Membership credentials are cached locally on your device. Even in signal-deprived garages, underground auto shows, or remote mountain passes, Pro users retain 7 full days of offline access.

8.4 One-Tap Email Technical Support (Email Support)

Tap Email Support in Settings to open your email client with your app build number and OS environment automatically attached (e.g., V1.4 (2611.1301) / iOS 17.5), ensuring rapid diagnostic support.