Research · Subcompact Cars

2014 BMW I3 RexRecalls, problems, MPG & safety

NHTSA lists 0 safety recalls and 22 owner complaints for the 2014 BMW I3 Rex. Most complaints involve power train (11) and engine (7). The EPA rates it 39 mpg combined.

Combined MPG
39mpg
EPA · 1 version
NHTSA overall
—
Not rated by NCAP
Safety recalls
0campaigns
NHTSA
Owner complaints
22
Top: power train
Fuel cost / yr
$2,050est.
EPA estimate, best version
01 —Recalls

Safety recalls

NHTSA campaigns for this model year
0 recalls found in NHTSA data for the 2014 BMW I3 Rex as of Oct 27, 2026.
Data from NHTSA Recalls API · synced Oct 27, 2026NHTSA vehicle page
02 —Complaints

Owner complaints by component

22 complaints filed with NHTSA · Jun 2014 – Mar 2023
  1. Power train11
  2. Engine7
  3. Fuel/propulsion system6
  4. Electrical system5
  5. Steering3
  6. Vehicle speed control3
  7. Electronic stability control (esc)2
  8. Seat belts2
  9. Wheels1

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

By model year

Complaints for each I3 Rex model year we’ve synced.

Only one model year synced so far.

Crashes reported
1
Fires reported
1
Injuries reported
0
Deaths reported
0
Data from NHTSA Complaints API · synced Oct 27, 2026 · Full problem breakdownNHTSA vehicle page
03 —Common problems

What owners report most

Verbatim excerpts from NHTSA complaints, by component

Power train

11 reports1 crash
“THE CAR, WHILE DRIVING ON A 2 LANE ROAD, CEASED IT OPERATION ANNOUNCING IT HAD DRIVE TRAIN FAILURE. LUCKILY I WAS SLOWING FOR A LIGHT, AS THE STEERING AND BRAKES ALSO BECAME UNRESPONSIVE. THE CAR COULD BE MANUALLY TURNED OFF (THE REMAINING FUNCTIONS AND POWER OFF). IT THEN COULD BE TURNED BACK ON AND DRIVEN. IN OTHER WORDS, THE CAR DECIDED TO GO OFF LINE WHILE IN A STATE OF ENGAGEMENT WITH THE ROAD AND THE DRIVER.”
Owner complaint to NHTSAFiled Apr 3, 2019Power train, Electrical system, Electronic stability control (esc)ODI 11193570

Engine

7 reports
“THE REX (RANGE EXTENDER) ON MY I3 DOES NOT TURN ON, AT RANDOM, WHEN THE BATTERY LEVEL OF THE VEHICLE GETS TO A POINT THAT IS LOW ENOUGH FOR IT TO TURN ON. WHEN THIS HAPPENS, THE VEHICLE EXPERIENCES A SUDDEN AND VIOLENT LOSS OF SPEED WITH NO WARNING. THIS HAS, ON MORE THAN ONE OCCASION, NEARLY CAUSED AN ACCIDENT WHILE IN TRAFFIC. THE BMW DEALERSHIP HAS CONFIRMED THIS IS AN ISSUE IN MY VEHICLE AND HAS SUCCESSFULLY BEEN ABLE TO REPRODUCE IT ON MORE THAN ONE OCCASION. IT HAS BEEN 'FIXED' ON MORE THAN ONE OCCASION AS WELL. THE VEHICLE STILL EXPERIENCES THIS ISSUE INTERMITTENTLY WITH NO WARNING. THE DEALERSHIP IS NO LONGER ABLE TO REPRODUCE THIS ISSUE WHEN TAKEN IN FOR SERVICE. THE DEALERSHIP HAS NOW TAKEN A STANCE THAT THE VEHICLE VIOLENTLY LOSING POWER AND SPEED (AS IF THE BRAKES HAVE BEEN APPLIED HEAVILY) IS "OPERATION NORMALLY FOR CONDITIONS" AND "NO ACTIONS TAKEN" AND ADVICE THAT THIS IS AN ACCEPTABLE AND KNOWN AND HAVE "ADVISED CUSTOMER OF LIMITATION OF DRIVING ON THE REX WITH TOO MANY CUSTOMER DEMANDS..." THE VEHICLE HAS EXPERIENCED THE REX NOT TURNING ON AND LOSING POWER WHILE IN MOTION AND ON THE HIGHWAY AND SURFACE / LIGHT COMMERCIAL STREETS AT ALL LEVELS…”
Owner complaint to NHTSAFiled Feb 8, 2019Electrical system, Engine, Fuel/propulsion systemODI 11175779

Fuel/propulsion system

6 reports
“I TEST DROVE A BMW I3. I GOT INTO TROUBLE BECAUSE THEY FORGOT TO CHARGE IT UP COMPLETELY WHEN I DROVE IT. ALMOST DIED. CONSUMER REPORTS DESCRIBES IT ALL BETTER THAN I CAN: "A NEW LAWSUIT ALLEGES THAT BMW I3 ELECTRIC CARS CAN SUDDENLY SLOW DOWN WHEN THEIR BATTERY POWER IS LOW, POTENTIALLY PUTTING PASSENGERS IN DANGEROUS SITUATIONS. FILED TUESDAY IN U.S. DISTRICT COURT IN LOS ANGELES, THE CLASS-ACTION SUIT ALLEGES THAT THE I3'S 'RANGE EXTENDER FEATURE ... DOESN'T PRODUCE ENOUGH POWER TO PREVENT A DRAMATIC DECREASE IN THE VEHICLE'S PERFORMANCE. AS ALLEGED, IF THE CAR IS UNDER ANY KIND OF SIGNIFICANT LOAD (SUCH AS GOING UP A HILL, OR LOADED WITH PASSENGERS), THE SPEED OF THE CAR WILL DRAMATICALLY DECREASE AS THE BATTERY CHARGE DIMINISHES,' ACCORDING TO A PRESS RELEASE FROM PLAINTIFF ATTORNEY JONATHAN MICHAELS OF NEWPORT BEACH, CALIF." -- CONSUMER REPORTS MAGAZINE REPORTS.”
Owner complaint to NHTSAFiled May 20, 2016Power train, Engine, Fuel/propulsion systemODI 10869984
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 27, 2026
04 —Key specs

Engines, transmissions & drive

1 version rated by the EPA
EPA class
Subcompact Cars
Engines
0.6L 2-cyl plug-in hybrid
Transmissions
Automatic (A1)
Drive
Rear-Wheel Drive
Fuel
Premium Gasoline
EV range
150 mi (EPA)

Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.

Data from EPA fueleconomy.gov · synced Oct 27, 2026EPA listing
05 —Fuel economy

EPA fuel economy by version

City / highway / combined, annual fuel cost and CO₂
EPA
VersionCityHwyComb.Fuel / yrCO₂ g/mi
i3 REX
Auto (A1), 2 cyl, 0.6 L · Rear-Wheel Drive
413739$2,05040
  • i3 REX
    Auto (A1), 2 cyl, 0.6 L
    41 city · 37 hwy · $2,050/yr
    39
    mpg comb.
Data from EPA fueleconomy.gov · synced Oct 27, 2026 · Fuel cost is EPA’s annual estimate (15,000 mi, 55% city)
06 —Safety

NHTSA 5-Star Safety Ratings

New Car Assessment Program
NHTSA has not published 5-Star Safety Ratings for the 2014 BMW I3 Rex as of Oct 27, 2026.
Data from NHTSA NCAP Safety Ratings API · synced Oct 27, 2026
07 —Maintenance

Maintenance basics

General guidance, not the OEM schedule. Check your owner’s manual.
General guidance
ItemMilesTimeNote
Engine oil & filter5,000–10,000 mi6–12 monthsFollow the oil-life monitor if fitted
Tire rotation5,000–7,500 miEvery oil changeCheck pressure monthly
Engine air filter15,000–30,000 mi1–2 yearsSooner in dusty areas
Cabin air filter15,000–25,000 mi1–2 years
Brake fluid—2–3 yearsAbsorbs moisture over time
Coolant60,000–100,000 mi5–10 yearsLong-life coolants last longer
Spark plugs60,000–100,000 mi—Iridium/platinum plugs at the long end
12V battery—3–5 yearsHeat shortens battery life
  • Engine oil & filter5,000–10,000 mi
    6–12 months
  • Tire rotation5,000–7,500 mi
    Every oil change
  • Engine air filter15,000–30,000 mi
    1–2 years
  • Cabin air filter15,000–25,000 mi
    1–2 years
  • Brake fluid—
    2–3 years
  • Coolant60,000–100,000 mi
    5–10 years
  • Spark plugs60,000–100,000 mi
    —
  • 12V battery—
    3–5 years
Typical intervals for modern cars. Severe service (towing, short trips, extreme heat or cold) shortens them.
09 —FAQ

2014 I3 Rex questions

How many recalls does the 2014 BMW I3 Rex have?

0 recalls found in NHTSA data as of Oct 27, 2026.

What are the most common 2014 BMW I3 Rex problems?

Owners filed 22 complaints with NHTSA. The most-cited components are power train (11), engine (7), fuel/propulsion system (6). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.

What MPG does the 2014 BMW I3 Rex get?

The EPA rates the 2014 BMW I3 Rex at 39 mpg combined, depending on engine and drivetrain (1 version rated).

Data from NHTSA & EPA · synced Oct 27, 2026