Is the 2018 Bmw 640I reliable?

The 2018 Bmw 640I has 8 complaints filed with NHTSA (1.0x the segment average). Our reliability verdict: average. Most common issue: DRIVER ASSIST/CAMERAS problems.

What are common problems with the 2018 Bmw 640I?

Top problems: DRIVER ASSIST/CAMERAS (2 complaints, avg repair $500); ELECTRICAL (1 complaints, avg repair $500); ENGINE (1 complaints, avg repair $500). Issues typically appear around 50K miles.

Are there any recalls on the 2018 Bmw 640I?

Yes, there are 2 recall(s): ENGINE AND ENGINE COOLING:ENGINE, BACK OVER PREVENTION: SENSING SYSTEM: CAMERA. Contact any Bmw dealer to verify if recalls have been completed on your specific vehicle.

How much does it cost to fuel a 2018 Bmw 640I?

The 2018 Bmw 640I gets 23 MPG combined. At current US average gas prices, driving 12,000 miles per year costs roughly $2087. See the interactive fuel cost calculator on this page for state-specific pricing.

How much does it cost to insure a 2018 Bmw 640I?

Estimated US average full-coverage insurance for the 2018 Bmw 640I is approximately $2,143/year (sedan-luxury class). Actual quotes vary heavily by state, driver age, driving record, and credit — see the interactive insurance estimator on this page for state-specific pricing.

2018 Bmw 640I

Problems, Recalls & Reliability Report

Average

Quick Summary

The 2018 Bmw 640I has 8 owner complaints filed with NHTSA — that's 1.0x the segment average of 8. The most common issue is driver assist/cameras problems (25% of all complaints), specifically: the car on my right changed lanes and and hit the front of my car. photo's of damage attached. the damage was to the right side of the bumper and panel on the front side. police report attached. the carfax report printed 5/5/2021 shows damaged areas as front, right and rear. the damage was limited . There are 2 recalls issued for this model year.

3 crash reports

Total Complaints

Recalls Issued

—/5

Safety Stars

1.0x

vs Segment Avg

Known Problems(top 5 of 7)

DRIVER ASSIST/CAMERAS

2 complaints

25%

• THE CAR ON MY RIGHT CHANGED LANES AND AND HIT THE FRONT OF MY CAR. PHOTO'S OF DAMAGE ATTACHED. THE DAMAGE WAS TO THE RIGHT SIDE OF THE BUMPER AND PANEL ON THE FRONT SIDE. POLICE REPORT ATTACHED. THE CARFAX REPORT PRINTED 5/5/2021 SHOWS DAMAGED AREAS AS FRONT, RIGHT AND REAR. THE DAMAGE WAS LIMITED
• THE CAR ON MY RIGHT CHANGED LANES AND AND HIT THE FRONT OF MY CAR. PHOTO'S OF DAMAGE ATTACHED. THE DAMAGE WAS TO THE RIGHT SIDE OF THE BUMPER AND PANEL ON THE FRONT SIDE. POLICE REPORT ATTACHED. THE CARFAX REPORT PRINTED 5/5/2021 SHOWS DAMAGED AREAS AS FRONT, RIGHT AND REAR. THE DAMAGE WAS LIMITED

Typical onset: 50K miles Est. repair: $500💥 2 crashes

“THE CAR ON MY RIGHT CHANGED LANES AND AND HIT THE FRONT OF MY CAR. PHOTO'S OF DAMAGE ATTACHED. THE DAMAGE WAS TO THE RIGHT SIDE OF THE BUMPER AND PANEL ON THE FRONT SIDE. POLICE REPORT ATTACHED. THE CARFAX REPORT PRINTED 5/5/2021 SHOWS DAMAGED AREAS AS FRONT, RIGHT AND REAR. THE DAMAGE WAS LIMITED ”

— NHTSA complaint filing

Recalls (2)

ENGINE AND ENGINE COOLING:ENGINE12/07/2018

BMW of North America, LLC (BMW) is recalling certain 2018 BMW 540d xDrive vehicles. The crankshaft sensor may be equipped with incorrect firmware, preventing the sensor from properly processing input from the crankshaft reluctor ring, possibly resulting in a vehicle stall. On September 12, 2018, BMW expanded the recall to a total of 5,309 vehicles including certain 2018-2019 BMW 540d xDrive, 230i M240i, M240i xDrive, X2 sDrive28i, X2 xDrive28i, X1 sDrive28i, X1 xDrive28i, 330i, 330i xDrive, 340i, 340i xDrive, 330i xDrive Gran Turismo, 530i, 530i xDrive, 540i, 540i xDrive, 530e, 530e xDrive, 640i xDrive Gran Turismo, 330e, 2019 430i Gran Coupe, 430i xDrive Gran Coupe, 440i Gran Coupe, 440i xDrive Gran Coupe, 430i, 430i xDrive, 440i, 440i xDrive, 740i, 740i xDrive, MINI Cooper, Cooper S, JCW, MINI Countryman (Cooper, Cooper All4, Cooper S, Cooper S All4, JCW All4), and MINI Clubman (Cooper, Cooper S, Cooper All4, Cooper S All4, JCW All4) vehicles.

Risk: A vehicle stall can increase the risk of a crash.

Fix: BMW will notify owners, and dealers will replace the crankshaft sensor, free of charge. The recall began September 6, 2018. Owners may contact BMW customer service at 1-800-525-7417.

Fuel Cost Calculator for 2018 Bmw 640I

Live EIA prices

Annual miles driven: 12,000

Your state (affects local gasoline price)

Per year

$2,087

Per month

$174

Per mile

17.4¢

MPG

City driving (worst-case MPG)

$2,401/yr

Highway driving (best-case MPG)

$1,656/yr

Based on EPA fuel-economy ratings and EIA weekly retail prices (2026-07-20). Real-world cost varies with driving style, trim/engine, terrain, and traffic.

5-Year Gas Price History

EIA weekly retail data · 2021 → today

Show:

Current

$4.00

5-year low

$2.78

5-year high

$5.01

Since 2021

+27%

Source: US Energy Information Administration weekly retail gasoline prices.

Estimated Insurance Cost for 2018 Bmw 640I

Estimate only, not a quote. Modeled from NAIC + HLDI averages for a hypothetical 35-year-old driver with clean record + full coverage. Your actual quote depends heavily on your age, driving history, credit, ZIP code, and insurer.

Your state (affects local premium average)

Full coverage / year

$2,143

Full coverage / month

$179

Liability only / year

$710

vs US avg

+28%

How this estimate is calculated

US base full-coverage premium$1674

× state (US)1.00x

× vehicle class (sedan-luxury)1.28x

× theft risk1.00x

× safety rating1.00x

× vehicle age1.00x

= Full coverage estimate$2143

Coverage assumed: 100/300/100 liability + comprehensive/collision, $500 deductibles. Data sources: NAIC 2024 + HLDI loss studies.

Maintenance & Warranty

Recommended Bmw 640I Service Intervals

Oil change

10K mi / 12 mo

Tire rotation

10K mi

Brake fluid

24 months

Transmission fluid

60K mi

Engine coolant

100K mi

Spark plugs

60K mi

Cabin air filter

15K mi

Engine air filter

30K mi

Differential (AWD/4WD)

60K mi

Condition-Based Service (CBS) tells you exactly when service is due. Transmission fluid was labeled 'lifetime' but many owners service at 60K-100K.

"Severe service" conditions (heavy towing, extreme temps, city stop-and-go) typically halve these intervals. Always consult your vehicle's owner's manual for the authoritative schedule.

Bmw New-Vehicle Warranty Coverage

Bumper-to-bumper (basic)

4 yr / 50K mi

Powertrain

4 yr / 50K mi

Hybrid/EV battery

8 yr / 100K mi

Corrosion (rust perforation)

12 yr / unlimited mi

Roadside assistance

4 yr / unlimited mi

Corrosion is unlimited miles for 12 years

These are the terms for a new Bmw. If you're buying a used 2018 640I, remaining coverage is usually pro-rated from the vehicle's original in-service date. Not all coverage transfers between owners — check with a Bmw dealer for VIN-specific remaining warranty.

Estimated Repair Costs

DRIVER ASSIST/CAMERAS(~50K mi)

$500

ELECTRICAL(~50K mi)

$500

ENGINE(~50K mi)

$500

SPEED CONTROL(~50K mi)

$500

BODY/STRUCTURE(~50K mi)

$500

Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.

🔍 Pre-Purchase Inspection Checklist

Based on 8 owner complaints for this specific year, here's what to check or ask about:

☐
DRIVER ASSIST/CAMERAS: THE CAR ON MY RIGHT CHANGED LANES AND AND HIT THE FRONT OF MY CAR. PHOTO'S OF DAMAGE ATTACHED. THE DAMAGE WAS TO THE RIGHT SIDE OF THE BUMPER AND PANEL ON THE FRONT SIDE. POLICE REPORT ATTACHED. THE CARFAX REPORT PRINTED 5/5/2021 SHOWS DAMAGED AREAS AS FRONT, RIGHT AND REAR. THE DAMAGE WAS LIMITED
Typically appears around 50K miles. Repair cost ~$500
☐
ELECTRICAL: TL* THE CONTACT OWNS A 2018 BMW 640I. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO BMW OF SILVER SPRING (3211 AUTOMOTIVE BOULEVARD, SILVER SPRING, MD 20904, (888) 295-2096, WHERE THE TECHNICIAN DIAGNOSED AND DETERMINED
Typically appears around 50K miles. Repair cost ~$500
☐
ENGINE: TL* THE CONTACT OWNS A 2018 BMW 640I. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO BMW OF SILVER SPRING (3211 AUTOMOTIVE BOULEVARD, SILVER SPRING, MD 20904, (888) 295-2096, WHERE THE TECHNICIAN DIAGNOSED AND DETERMINED
Typically appears around 50K miles. Repair cost ~$500
☐
SPEED CONTROL: TL* THE CONTACT OWNS A 2018 BMW 640I. THE CONTACT STATED WHILE DRIVING AT VARIOUS SPEEDS WITH THE ADAPTIVE CRUISE CONTROL ENGAGED, THE VEHICLE FAILED TO STOP WITHOUT WARNING. THE VEHICLE WAS TAKEN TO BMW OF ANNAPOLIS (31 OLD MILL BOTTOM RD, ANNAPOLIS, MD 21401, (410) 349-9312) BUT WAS NOT DIAGNOSED
Typically appears around 50K miles. Repair cost ~$500
☐
RECALLS: Verify all 2 recalls have been completed — free at any Bmw dealer
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)