2009 BMW 135i Convertible
The 2009 BMW 135i Convertible is a convertible. It has a 3.0-litre turbocharged six-cylinder engine producing 300 hp (224 kW), with a 6-speed automatic and rear-wheel drive. 0–60 mph takes 5.2 seconds and top speed is 155 mph (249 km/h).
ABOUT THE 2009 BMW 135I CONVERTIBLE
The 2009 BMW 135i Convertible is the soft-top version of the E88 1 Series, the smallest BMW sold in North America at the time. It is powered by the N54 3.0-litre twin-turbocharged inline-six, rated at 300 hp and 300 lb-ft, and drives the rear wheels. This entry covers the version with the six-speed automatic; a six-speed manual was also offered.
Where it sits
The 1 Series convertible went on sale in the US in 2008, so 2009 was its second model year. The 135i sat above the 128i, adding the twin-turbo engine, firmer M Sport-style suspension, larger brakes and more aggressive bumpers. For 2009 it still used the N54 engine; the 135i switched to the single-turbo N55 for 2011.
Practicality
The fabric roof folds electrically and stows above the boot, so luggage space shrinks when the roof is down. It is a genuine four-seater, though the rear seats suit children or short trips. Ride quality is firm, reflecting the 135i’s sporting set-up.
Buying one today
The N54 is strong and tunable, but known weak points include high-pressure fuel pump failures, piezo injector problems, wastegate rattle and the electric water pump. Inspect the roof mechanism, seals and drains for leaks. Rivals in 2009 included the Audi A4 Cabriolet, Infiniti G37 Convertible and Volvo C70.
Written by CarDetails.org. Last reviewed October 31, 2026.
SPECS
| Make | BMW | Model | 135i Convertible |
|---|---|---|---|
| Year | 2009 | Version / Trim | BMW 2009 135i Convertible |
| Body Style | Convertible | Doors | 2 |
| Seats | 4 | Ext. Colour | Alpine White, Jet Black, Black Sapphire Metallic, Titanium Silver Metallic, Space Gray Metallic, Sparkling Graphite Metallic, Montego Blue Metallic, Monaco Blue Metallic, Crimson Red, Chestnut Bronze Metallic, Le Mans Blue Metallic |
| Steering | LHD / RHD | Manufactured In | Germany |
| Drive | Rear-Wheel Drive (RWD) | Transmission | Automatic (S6) |
| Engine | 3.0L 6-cyl Turbo | Engine Size | 3,000 cc |
| Power | 300 hp / 224 kW | Torque | 407 Nm / 300 lb-ft |
| 0–60 mph (0–97 km/h) | 5.2 sec | Top Speed | 155 mph (249 km/h) |
| Fuel Economy | 17 mpg city / 26 mpg hwy | ||
| Wheelbase | 2,660 mm | Kerb Weight | 1,420 kg (3,131 lb) |
HOW IT COMPARES WITH OTHER 2009 CONVERTIBLES
Compared with other 2009 convertibles in our database, its 300 hp is close to the average for a 2009 convertible (311 hp), and it reaches 60 mph 0.8 seconds quicker than average, and it is 8% lighter than the typical convertible.
| 2009 BMW 135i Convertible | Average 2009 convertibles | Difference | |
|---|---|---|---|
| Power | 300 hp | 311 hp (16 cars) | -4% |
| Torque | 407 Nm | 378 Nm (16 cars) | +8% |
| 0–60 mph | 5.2 s | 6.0 s (14 cars) | -13% |
| Top speed | 155 mph | 143 mph (14 cars) | +8% |
| Kerb weight | 1,420 kg | 1,547 kg (16 cars) | -8% |
| Engine size | 3,000 cc | 3,438 cc (16 cars) | -13% |
Averages are calculated from all cars of the same model year and body type in the CarDetails.org database that have the figure listed. For 0–60 mph, a negative difference means quicker.
CLOSEST RIVALS
Other 2009 convertibles with similar power to the 2009 BMW 135i Convertible.
| Car | Power | 0–60 mph | Kerb weight |
|---|---|---|---|
| 2009 BMW 135i Convertible | 300 hp | 5.2 s | 1,420 kg |
| 2009 Audi S4 Cabriolet | 340 hp | 5.0 s | 1,750 kg |
| 2009 Volvo C70 Convertible | 236 hp | 7.5 s | 1,560 kg |