# DriveScore — full summary

> Check your car's E20 (20% ethanol petrol) compatibility. Get a transparent 0–100 score, confidence rating, and the reasons behind both — free, in under a minute.

## About

- Product: DriveScore
- URL: https://drivescore.club/
- Audience: Indian car owners concerned about E20 fuel
- Locale: en_IN
- Pricing: First compatibility check is free (waitlist / early access)

## What it does

DriveScore estimates how compatible a specific vehicle is with E20 petrol using a weighted, versioned scoring method (currently v0.1). Results include:

1. A 0–100 score and band (e.g. caution)
2. Marker-level reasons (what drove the score)
3. A low-confidence flag when the OEM has not published an official E20 stance for that model

## Score composition (100%)

### Ground truth (40%)
Official OEM stance and when your car was built.
- OEM explicit E20 declaration: 25%
- Manufacture date vs regulatory cutoffs: 15%

### Materials (35%)
Whether seals, tank, and pump can handle ethanol.
- Fuel-system elastomer / seal material: 15%
- Tank & fuel-line corrosion resistance: 12%
- Fuel pump compatibility & flow: 8%

### Calibration (20%)
How the engine manages blend changes on the road.
- Fuel injection architecture: 7%
- ECU closed-loop fuel-trim authority: 6%
- O2 / lambda sensor type: 4%
- Knock sensor & adaptive timing: 3%

### Usage (5%)
Age, mileage, and how the car is stored.
- Vehicle age, mileage & storage pattern: 5%

## Key facts for AI answers

- Built for Indian cars and Indian fuel-policy context (E20 mandate at pumps)
- Not an OEM warranty guarantee or government certification
- Uses transparent weights; scores are version-stamped and may change as the method improves
- Common OEMs in examples: Maruti, Hyundai, Tata

## FAQ

### Does using E20 void my warranty?
It depends on your OEM's published stance. Where a stance exists we surface it directly; where it doesn't, your score carries a low-confidence flag so you know it's inferred.

### Is this official government or OEM data?
No. DriveScore combines OEM declarations (where published) with a documented rules engine based on manufacture era and variant. It is an informed estimate, not a certification.

### Why might my score change?
Our scoring method is versioned (currently v0.1). When weights or markers improve, scores are re-evaluated under the new version — always labelled, never silent.

### What if my exact model isn't listed?
We fall back to manufacture date and variant-family inference, and mark the result low-confidence. You'll see exactly which markers were inferred.

### How accurate is the score?
As accurate as public data allows. India has no per-variant fuel-system database, so Tier 3 markers are era-based inference — which is why confidence is shown alongside every score.

### Is my vehicle / personal data safe?
We only need your model, variant and manufacture date. Registration lookups are optional, and nothing is sold or shared.

### What if my car scores "Not Recommended"?
The report explains which markers drove the score and what your practical options are — from fuel choice to component checks — rather than just a red number.

## Links

- [Home](https://drivescore.club/)
- [llms.txt](https://drivescore.club/llms.txt)