Is the 2018 Bmw M3 reliable?

The 2018 Bmw M3 has 10 complaints filed with NHTSA (1.0x the segment average). Our reliability verdict: above-average. Most common issue: FUEL SYSTEM problems.

What are common problems with the 2018 Bmw M3?

Top problems: FUEL SYSTEM (6 complaints, avg repair $500); OTHER (2 complaints, avg repair $500); ENGINE (1 complaints, avg repair $500). Issues typically appear around 50K miles.

Are there any recalls on the 2018 Bmw M3?

No recalls have been issued for the 2018 Bmw M3.

How much does it cost to fuel a 2018 Bmw M3?

The 2018 Bmw M3 gets 20 MPG combined. At current US average gas prices, driving 12,000 miles per year costs roughly $2400. See the interactive fuel cost calculator on this page for state-specific pricing.

How much does it cost to insure a 2018 Bmw M3?

Estimated US average full-coverage insurance for the 2018 Bmw M3 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 M3

Problems, Recalls & Reliability Report

Above Average

Quick Summary

The 2018 Bmw M3 has 10 owner complaints filed with NHTSA — that's 1.0x the segment average of 10. The most common issue is fuel system problems (60% of all complaints), specifically: fuel tank started leaking gasoline on the driver's side of the car. i only noticed because of the strong smell of gasoline and slipping a puddle of gas. i feel that my safety was at risk if i was to drive around with gasoline leaking out of the car that could have caused an explosion. i took the car.

Total Complaints

Recalls Issued

—/5

Safety Stars

1.0x

vs Segment Avg

Known Problems(top 4 of 4)

FUEL SYSTEM

6 complaints

60%

• Fuel tank started leaking gasoline on the driver's side of the car. I only noticed because of the strong smell of gasoline and slipping a puddle of gas. I feel that my safety was at risk if I was to drive around with gasoline leaking out of the car that could have caused an explosion. I took the car
• What component or system failed or malfunctioned, and is it available for inspection upon request? Fuel tank rubber gasket failed How was your safety or the safety of others put at risk? Leaks large amount of fuel and can cause a fire or explosion Has the problem been reproduced or confirmed by a
• After filling gas tank a strong aroma of gasoline was noticeable. This happened three successive times.

Typical onset: 50K miles Est. repair: $500

“Fuel tank started leaking gasoline on the driver's side of the car. I only noticed because of the strong smell of gasoline and slipping a puddle of gas. I feel that my safety was at risk if I was to drive around with gasoline leaking out of the car that could have caused an explosion. I took the car”

— NHTSA complaint filing

Fuel Cost Calculator for 2018 Bmw M3

Live EIA prices

Annual miles driven: 12,000

Your state (affects local gasoline price)

Per year

$2,401

Per month

$200

Per mile

20.0¢

MPG

City driving (worst-case MPG)

$2,824/yr

Highway driving (best-case MPG)

$1,920/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 M3

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 M3 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 M3, 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

FUEL SYSTEM(~50K mi)

$500

OTHER(~50K mi)

$500

ENGINE(~50K mi)

$500

TRANSMISSION(~50K mi)

$500

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

🔍 Pre-Purchase Inspection Checklist

Based on 10 owner complaints for this specific year, here's what to check or ask about:

☐
FUEL SYSTEM: Fuel tank started leaking gasoline on the driver's side of the car. I only noticed because of the strong smell of gasoline and slipping a puddle of gas. I feel that my safety was at risk if I was to drive around with gasoline leaking out of the car that could have caused an explosion. I took the car
Typically appears around 50K miles. Repair cost ~$500
☐
OTHER: HELLO, I HAVE A 2018 BMW M3 THAT IS ABOUT 12 MONTHS OLD. THERE WAS A SIRIUS XM (SATELLITE RADIO) TRIAL PERIOD OF 1 YEAR, AND NOW THAT IT IS ABOUT TO EXPIRE, THERE IS AN ADVERTISEMENT IN MY NAVIGATION WINDOW THAT COMES UP EVERY TIME I TURN ON THE CAR, THAT HAS TO BE CLEARED VIA PRESSING "OK" OR ELSE
Typically appears around 50K miles. Repair cost ~$500
☐
ENGINE: CRANK HUB WILL BE PRONE TO SPIN AND THEREFORE WILL DESTROY ENGINE WHICH WILL REQUIRE A FULL ENGINE REPLACEMENT. *TR
Typically appears around 50K miles. Repair cost ~$500
☐
TRANSMISSION: CRANK HUB WILL BE PRONE TO SPIN AND THEREFORE WILL DESTROY ENGINE WHICH WILL REQUIRE A FULL ENGINE REPLACEMENT. *TR
Typically appears around 50K miles. Repair cost ~$500
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)