While in bumper to bumper traffic car lunged while accelerating. Was at a complete stop then lifted off brake and began to feed in gas when the transmission shifted from first to second (automatic transmission) the car lunged or jumped forward. The action was so severe my first action after hitting brakes was to check rear view mirror thinking I had been rear ended. Car has 19700 miles and…
2015 MINI Cooper Convertible powertrain problems
moderate 8 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Complaints
8
Recalls
0
Avg fix
$2,500
When does it fail?
Of the 8 powertrain complaints filed for the 2015 MINI Cooper Convertible, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA powertrain complaint has been filed on this vehicle in over 8 years — the issue may be aging out of the active population.
What owners are reporting 4 most recent
Cpsc: Mini cooper: consumer stated the cruise control would disengage. *ss the consumer stated discovered when using the clutch and down shifting the cruise control did not disengage. The first time he tried the cruise control, while down shifting the vehicle maintained speed and shot forward instead of slowing down. *jb
When refueling, nozzle kept shutting off, a gallon was pumped after nine attempts, also fuel erupted as the fill tube was filled with gas. reluctant to drive this car not knowing how much gas is in the tank. The needle shows less than 1/4 and miles remaining fluctuates between 80 and 110 miles. We are told that this problem exists in many mini automobiles, dealer has replacement gas tanks, but…
On display I am getting warning " secure vehicle with parking brake when stationary" whereas my car is in park position with hand brake applied. The warning still shows up. The gearbox works fine the car drives fine. Its the warning that doesn't seem to go away. On diagnostics is shows code "420106" . DEFECTIVE GEAR SHIFT LEVER SPRING
Had powertrain trouble with your 2015 MINI Cooper Convertible?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2015 MINI Cooper Convertible?
It's a documented issue but not catastrophic. 8 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Based on the 8 complaints filed, powertrain issues most often appear around 29,175 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2015/MINI/Cooper Convertible.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.