2008 BMW 1 Series Convertible 135i Convertible 6AT
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All photo credits
- Photo: BMW 1er Cabriolet M-Sportpaket (E88, Facelift) – Frontansicht, 17. März 2012, Düsseldorf by M 93, CC BY-SA 3.0 de, via Wikimedia Commons
- Photo: Everytimer ETA 02 1Y7A6212 by Alexander Migl, CC BY-SA 4.0, via Wikimedia Commons
- Photo: Classic-Gala 2025, Schwetzingen (20250906-P1049502) by Matti Blume, CC BY-SA 4.0, via Wikimedia Commons
- Photo: BMW 1er Cabriolet M-Sportpaket (E88, Facelift) – Heckansicht, 17. März 2012, Düsseldorf by M 93, CC BY-SA 3.0 de, via Wikimedia Commons
- Photo: Everytimer-02 Heck 2018-03-24 by Wikisympathisant, CC BY-SA 4.0, via Wikimedia Commons
The 2008 BMW 1 Series Convertible 135i Convertible 6AT is a 300-hp 3.0-liter convertible with a 6-speed steptronic automatic and rear-wheel drive.
It makes 300 horsepower at 5,800 rpm and 300 lb-ft of torque at 1400 rpm, spinning to a 7,000 rpm redline. EPA fuel-economy estimates are 17 mpg city and 26 mpg highway.
The 1 Series Convertible measures 172.2 inches long on a 104.7-inch wheelbase and has a curb weight of 3,671 lb.
| Spec | Value |
|---|---|
| Vehicle | |
| Body Type | Convertible |
| Powertrain | Gas |
| Price | |
| MSRP with Destination | $41,150 ($62,117 *) |
| Engine | |
| Engine Type | N54B30 |
| Displacement | 3 L |
| Horsepower | 300 hp @ 5,800 rpm |
| Torque | 300 lb-ft @ 1400 rpm |
| Redline | 7,000 rpm |
| Valvetrain | DOHC 24-valve twin-turbocharged inline-6, piezo direct injection |
| Drivetrain | |
| Drive Type | RWD |
| Transmission | |
| Transmission | 6-speed STEPTRONIC automatic |
| Fuel Economy | |
| City | 17 MPG |
| Highway | 26 MPG |
| Recommended Fuel | Premium unleaded |
| Tank Capacity | 14 gal |
| Brakes | |
| Front Brake Disc | 13.3 in (vented) |
| Rear Brake Disc | 12.8 in (vented) |
| Tires & Wheels | |
| Wheels Front | 17x7.0 |
| Wheels Rear | 17x7.0 |
| Tires Front | 205/50R17 |
| Tires Rear | 205/50R17 |
| Dimensions & Weight | |
| Length | 172.2 in |
| Width | 68.8 in |
| Height | 55.6 in |
| Wheelbase | 104.7 in |
| Front Track | 58 in |
| Rear Track | 59.3 in |
| Curb Weight | 3,671 lbs |
| Weight Distribution (F/R) | 50.5% / 49.5% |
Similar cars
Rivals to the 2008 BMW 1 Series Convertible 135i Convertible 6AT with similar size, power and price from around the same years.
Safety & Recalls
NCAP safety ratings
Not crash-tested by NHTSA for this model year.
Recalls
3 recalls on file with NHTSA for the 2008 BMW 1 SERIES. Not every recall applies to every trim or VIN — check yours at nhtsa.gov/recalls.
Aug 10, 2012 · ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
This recall involves aftermarket parts sold by Valeo. Valeo is recalling certain engine cooling fans, part numbers 696121, 696273, and 696275, used as service replacement parts for model year 2008-2011 BMW 1-Series, 2006-2011 BMW 3-Series, 2000-2009 BMW 5-Series, 2004-2005 BMW 6-Series, and 2006-2007 BMW 7-Series vehicles. A metal-oxide semiconductor may overheat due to insufficient screwing of the semiconductor on the aluminum heat sink. This primary failure could cause adjacent components on the fan assembly motor circuit board to overheat and short.
Consequence: This condition could cause the fan motor to become inoperative, or cause the motor circuit board in the assembly to overheat, potentially leading to a fire in the engine compartment.
Remedy: Valeo will notify owners and replace the fans free of charge. The safety recall began on August 22, 2012. This recall is being conducted by Valeo, not by BMW. For further information, owners may contact Valeo at 1-888-718-2536.
NHTSA campaign 12E029000
Jun 10, 2010 · SEAT BELTS:FRONT:RETRACTOR
BMW IS RECALLING CERTAIN MODEL YEAR 2008-2011 1-SERIES VEHICLES. IN A CRASH OF SUFFICIENT SEVERITY, DEPLOYMENT OF THE FRONT PRE-TENSIONER AND LOAD-LIMITER OCCURS.
Consequence: THE INSULATION AROUND THE PRE-TENSIONER COULD IGNITE.
Remedy: VEHICLES PRODUCED UP THROUGH DECEMBER 2009 WILL RECEIVE NEW FRONT SAFETY BELT RETRACTOR UNITS AND A MODIFICATION TO THE SOUND INSULATION NEAR THE UNITS, WHILE VEHICLES PRODUCED BETWEEN JANUARY 2010 AND MAY 2010 WILL RECEIVE A MODIFICATION TO THE SOUND INSULATION NEAR THE UNITS. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON AUGUST 23, 2010. OWNERS MAY CONTACT BMW AT 1-800-525-7417.
NHTSA campaign 10V254000
Jul 8, 2009 · AIR BAGS:FRONTAL
BMW IS RECALLING 2,350 MY 2008 1-SERIES AND 3- SERIES PASSENGER CARS. INCORRECT CRIMP CONNECTORS MAY HAVE BEEN USED ON THE SIDE AIR BAG AND BELT TENSIONER WIRING. AS A RESULT SUFFICIENT CONTACT BETWEEN THE CRIMP CONNECTORS AND THE CORRESPONDING PLUG MAY NOT OCCUR WHICH COULD LEAD TO AN INCREASE IN THE ELECTRICAL RESISTANCE OF THAT CONNECTION.
Consequence: IF THAT HAPPENED, IT WOULD BE POSSIBLE FOR THE SIDE AIR BAG AND/OR THE SAFETY BELT TENSIONER NOT TO DEPLOY AND WILL NOT BE ABLE TO PROPERLY PROTECT AN OCCUPANT, INCREASING THE RISK OF INJURIES.
Remedy: BMW WILL NOTIFY OWNERS AND REPAIR THE VEHICLES FREE OF CHARGE. THE SAFETY RECALL BEGAN ON SEPTEMBER 16, 2009. OWNERS MAY CONTACT BMW CUSTOMER RELATIONS AND SERVICES TOLL-FREE AT 1-800-525-7417.
NHTSA campaign 09V257000
Source: US National Highway Traffic Safety Administration (nhtsa.gov), matched as 2008 BMW 1 SERIES. US-market vehicles only; data cached for up to 7 days.