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2017 BMW

640i xDrive Convertible

Auto (S8), 6 cyl, 3.0 L, Turbo

BMW 640i: best and worst years
2017 BMW 640i xDrive Convertible (photo 1 of 3)
2017 photoTokumeigakarinoaoshimaCC BY-SA 4.0Wikimedia Commons

Overview

Body
Subcompact CarsEPA, from EPA, last updated 6/22/2026
Drivetrain
All-Wheel DriveEPA, from EPA, last updated 6/22/2026
Transmission
Automatic (S8)EPA, from EPA, last updated 6/22/2026
Powertrain
GasEPA, from EPA, last updated 6/22/2026
Fuel
PremiumEPA, from EPA, last updated 6/22/2026

Engine & performance

HP
300
Power to weight
0.069 hp/lb
Axle ratio
3.23
Cyl
6EPA, from EPA, last updated 6/22/2026
Aspiration
TurbochargedEPA, from EPA, last updated 6/22/2026
Start-stop system
YesEPA, from EPA, last updated 6/22/2026

Efficiency

MPG Hwy
28 mpgEPA, from EPA, last updated 6/22/2026
MPG City
19 mpgEPA, from EPA, last updated 6/22/2026
MPG Comb
22 mpgEPA, from EPA, last updated 6/22/2026
Fuel $/yr
$3,500EPA, from EPA, last updated 6/22/2026
CO₂
398 g/miEPA, from EPA, last updated 6/22/2026
Eco Score
5/10EPA, from EPA, last updated 6/22/2026
Smog score
6/10
Elec. Range
0 miEPA, from EPA, last updated 6/22/2026
SmartWay certified
No

Dimensions & capacity

Length
197 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Width
74 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Height
55 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Wheelbase
117 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Curb Weight
4,330 lbNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026

Safety NHTSA, model year

Stability control (ESC)
Standard
Forward-collision warning
No
Lane-departure warning
No
Recalls
0
Owner complaints
0

Federal investigations NHTSA defect investigations, model year

  • EA21002Openopened Sep 17, 2021AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE

    Desiccated Air Bag Inflator Rupture

Known issues manufacturer service bulletins, model year

113 service bulletins filed with NHTSA for this model year

  • Mar 14, 2024EXTERIOR LIGHTINGB630418

    One or more of the LED daytime running lights are dim or discolored.

  • Mar 4, 2024ENGINE AND ENGINE COOLINGB120721

    Check Control message (CCM) indicates: (ID 213): Stop, exercising due care. Voltage supply The Service Engine Soon light is on with the following DME Fault Code: 21B209 - Starter alternator / belt for 48V system (OSA_RIEMEN_RISS): Belt betweenCombustion engine and starter generator torn And/or one or more of the following other issues are also occurring: Noise in the area of the belt drive. Odor from the engine compartment. Smoke formation in the area of the belt drive. Drive belt damage

  • Jan 16, 2024ELECTRICAL SYSTEMB510819

    The basic conditions for initializing the power windows are not met.

  • Jan 11, 2024ELECTRICAL SYSTEMB611305

    The electrical system of BMW vehicles has been subject to an ongoing development process over the last few years. This has led to increased demands being placed on the battery. This document covers important information for the dealer on how to handle “discharged battery” complaints.

  • Jan 5, 2024EQUIPMENT:ELECTRICAL:INFOTAINMENTB610524

    The Central Information Display goes black intermittently due to resets of the Head Unit (HU-H3). FaultB7F8F9 – “HU-H: Reset” will be stored in the HU-H3.

  • Jan 4, 2024STEERINGB320223

    SITUATION Unusual noises occur only when operating the steering column in the axial direction. 1. A one-time thump sound at the start of movement Shortly after the steering column starts moving, retracting, or extending, a one-time thump noise is heard. See attached video V32 03 23 2. Humming noise while steering column extends in the axial direction. The sound is only heard when the steering column is extended, not when the steering column is retracted. When the steering column starts to

  • Nov 13, 2023ENGINE AND ENGINE COOLINGB011423

    PRESSURE CONTROL VALVE (PCV) EXTENDED LTD WTY 15 YEARS/150,000 MILES

  • Jun 1, 2023WHEELSB340914

    The Dynamic Stability Control (DSC) warning light comes on while driving. The following DSC fault codes for the wheel speed sensors are stored: 480712 and/or 480715 and/or 480718 and/or 48071B They cannot be cleared, even though the wheel speed sensors work correctly and no problem can be found with the wiring harness.

  • and 105 more

Source: NHTSA manufacturer communications (technical service bulletins).

Warranty manufacturer terms, by make

Basic
4 yr / 50k mi
Powertrain
4 yr / 50k mi
Roadside assistance
4 yr
Maintenance
3 yr / 36k mi
EV battery
8 yr / 100k mi

Information is gathered on a best-effort basis from public sources, may be incomplete or out of date, and is not purchasing or financial advice. Verify with the manufacturer or dealer before buying.