Live — Free to start

Your entire market watchlist
in one dashboard.

Stop checking six sites every morning. The RennPulse Valuation Tracker aggregates live auction data from BaT, PCarMarket, and Cars & Bids into a single cross-platform intelligence feed.

  • Watchlist with price-range and deal alerts across all platforms
  • ML-powered valuation engine trained on thousands of Porsche sales
  • Arbitrage alerts when a car is priced below fair value
  • Interactive price charts with BaT-style sold vs. reserve-not-met data
  • Transaction history with mileage-adjusted price benchmarks

Free tier available. No credit card required.

app.rennpulse.com/tracker
My Watchlist12 cars
997997 GT3 RS
+7% YoY
$178K
Alert: below 7-day market average
993993 Carrera
+12% YoY
$85K
996996 Turbo
+23% YoY
$89K
Data refreshed 4 min ago · BaT + PCarMarket + Cars & Bids

The Problem

Serious buyers check 6+ sites daily.

BaT, PCarMarket, Cars & Bids, eBay, Collecting Cars, and more — each with its own search, its own alerts, and its own interface. By the time you spot an underpriced car, someone faster already bid.

6+

platforms serious buyers monitor daily

~3 hrs

average time spent per week on manual search

$8K+

typical savings when you know fair value before bidding

Under The Hood

Machine learning built exclusively for Porsches.

Generic car valuations treat every make the same. Our model uses gradient-boosted machine learning trained exclusively on Porsche transaction data — with recency-weighted comparable analysis, outlier filtering, and continuous weekly retraining to adapt as the market moves.

  • Gradient-boosted regression with weekly model retraining
  • Recency-weighted comparables (recent sales count more)
  • Generation-specific mileage and depreciation curves
  • Color, options, and specification premium modeling
  • Geographic and seasonal market adjustments
  • Cross-platform price differential analysis
  • Outlier detection and statistical confidence scoring
  • Bayesian priors for stable estimates on rare variants

Model Accuracy

911 (991/992)
R² 0.94MAPE 4.1%
911 (993/996/997)
R² 0.91MAPE 5.8%
Cayman / Boxster
R² 0.89MAPE 6.2%
GT variants
R² 0.96MAPE 3.4%
Full accuracy breakdown →

Features

Everything in one place.

Cross-Platform Watchlist

Add any Porsche model or spec to your watchlist. We surface matching auctions across BaT, PCarMarket, and Cars & Bids automatically.

Price Alerts

Set a price target and get notified the moment a matching car lists below your threshold — on any platform.

Arbitrage Detection

Our engine flags cars priced materially below their fair-value range, so you see opportunities before they sell.

Transaction History

Full sale history for every Porsche we track — price, mileage, spec, platform — searchable and filterable.

Generation Dashboards

Aggregate market data by generation: median prices, YoY trends, volume, and days-to-sell for each model family.

Deal Alerts

Get notified when listings drop below fair value. Pro members receive email alerts for price movements, new listings, and ending-soon auctions.

Start tracking for free.

Browse price charts and fair value estimates across every generation. Upgrade to Pro for full history, advanced filters, and email alerts.