2013 BMW 1 Series 135is 6-Speed Manual Transmission Cabriolet for sale in CA

This unit will be delivered with a brand-new set of Michelin Pilot Sport 4 tires (not pictured in photos), ensuring the next owner enjoys it at its very best.

“1 of 1. Built Once. Never Again.”

2013 BMW 135is Cabriolet – 1 of 1 as Built

A rare gem among modern BMWs, this 2013 BMW 135is Cabriolet is a singular creation—finished in Alpine White with a luxurious Taupe leather interior, paired to a 6-speed manual transmission, and representing a true one-of-one factory-built example. Crafted for just one model year, the 135is sits as the younger sibling to the legendary BMW 1M Coupe. While the 1M was celebrated for its raw motorsport character, the 135is channels that same DNA into a more refined yet equally thrilling package, with bespoke performance enhancements and a rare open-air driving experience.

Performance & Engineering

Engine: TwinPower Turbocharged 3.0-liter inline-6 (N55)

Output: 320 hp @ 5,800 rpm

Torque: 317 lb-ft @ ~1,500 rpm

Transmission: Rare 6-speed manual gearbox

0–60 mph: ~4.9 seconds

Top Speed: Electronically limited to ~155 mph

Fuel Economy (Manual, Convertible): ~17 mpg city / 26 mpg highway

Performance upgrades included a factory sport exhaust system, enhanced cooling (auxiliary radiator + high-capacity fan), and a sport-tuned suspension with aluminum double-pivot front and five-link rear setups. Dynamic Stability Control and Dynamic Traction Control are calibrated for spirited driving—but can be fully disabled, offering enthusiasts the pure control they crave.

Why This Car Stands Out

Exclusivity: A true 1-of-1 build, never to be replicated.

Heritage: The spiritual open-top sibling to the 1M Coupe.

Driver’s Choice: Manual gearbox + analog engagement.

Performance Convertible: 320 hp, 317 lb-ft, 155 mph top speed.

Collector Appeal: A single-year production model that embodies BMW’s golden era of driving machines.

Collector’s Note

This 2013 BMW 135is Cabriolet is more than just a convertible sports car—it is an irreplaceable piece of BMW history, equal parts collectible and exhilarating to drive.