Driver Score
Ranks every 911 variant using (HP/Weight) divided by 0-60 time, normalized so the best car scores exactly 100. Higher scores reward cars that deliver the most performance per kilogram as quickly as possible.
Weight vs Driver Score
Each dot is a single 911 variant plotted by kerb weight against its driver score. The shaded zone marks where Porsche consistently found the best balance between agility and outright performance.
Engine Efficiency
Average horsepower extracted from every litre of displacement, grouped by generation. The flat middle period reflects the emissions era; the steep climb from the 997 onwards shows what direct injection and modern turbocharging unlocked.
Air vs Water-Cooled
Porsche switched to water cooling with the 996 in 1999, a move that divided fans but delivered a step-change in power and refinement. These three bars compare average weight, power output, and driver score across both eras.
Emissions Penalty
The US Clean Air Act forced American-spec G-Series 911s to run catalytic converters, visibly cutting power output versus European variants. Each dot is a real car, showing the exact performance cost of emissions compliance year by year.
HP/kg Over Time
A full timeline of every 911 variant power-to-weight ratio with a LOWESS smoothed trend line. The plateau in the late 1970s marks the emissions era; the sharp climb post-2005 shows what modern forced induction achieved.
Nurburgring Score
The original goal formula: (HP/kg) divided by actual Nordschleife lap time, normalized 0-100. Only cars with a matched lap time scraped from fastestlaps.com are included. Both a faster lap and a higher power-to-weight ratio push the score up.
Track Width vs Lap Time
Tests whether a wider rear track relative to the front correlates with faster Nurburgring lap times. A downward slope would confirm the hypothesis. Only cars with both track measurement data and a matched lap time are included.