9 measured figures
9 of the 10 figures this market publishes for a car like this one are measured for this car. This market publishes no overall score, so there is no share of a composite weight to measure confidence against; figures_measured says how many of this market's figures the row carries, and contributing_publishers says who measured them
Measured figures
Fuel economy27 mpg (US gallons)Measured by EPA · configuration: Terrain FWD
Tailpipe CO₂202 g/kmMeasured by EPA · CO₂ basis: tailpipe_rated · configuration: Terrain FWD · also 325 g/mile
HorsepowerFree with an accountMeasured for this car, with its publisher and basis
Kerb weightFree with an accountMeasured for this car, with its publisher and basis
EPA test weightFree with an accountMeasured for this car, with its publisher and basis
WarrantyFree with an accountMeasured for this car, with its publisher and basis
Recall campaignsFree with an accountMeasured for this car, with its publisher and basis
NHTSA overall ratingFree with an accountMeasured for this car, with its publisher and basis
Complaints per 10,000 builtFree with an accountMeasured for this car, with its publisher and basis
7 more measured figures for this car — Horsepower, Kerb weight, EPA test weight, Warranty, Recall campaigns, NHTSA overall rating, Complaints per 10,000 built — each with the publisher that measured it and the basis it is on. Free to read with an account.
Figures this car does not carry
Fuel economy (MPGe)Not published for this carFuel economy (MPGe) is published for electric and hydrogen cars, whose economy is published as MPGe: energy converted at 33.7 kWh per gallon, not fuel burned; this car is not one of them, so the figure is not the same quantity for it
Tailpipe CO₂ (charge-weighted)Not published for this carthis car's CO₂ is published as the tailpipe rating for the car driven as rated on the test cycle (202 g/km), not as a composite weighted across electric and fuel-burning miles, so it is not the quantity this list orders. It is published as Tailpipe CO₂
Engine horsepowerNot published for this carNot published for this car. The record's own reason is free to read with an account.
PriceNot published for this carNot published for this car. The record's own reason is free to read with an account.
5-Year Running Costs
| Total | not estimated — a component above is unknown or modelled |
Running costs only — the purchase price is not included. The five-year running cost is an ESTIMATE, not a measurement of this car: only its fuel half is computed from the car's own measured consumption and a dated pump price (see fuel_price_source and fuel_price_as_of in the market's own figures); insurance, maintenance and repairs are class models. It orders no list and is not one of this market's published figures. Confidence is low: several components are modelled from class averages.
Known Issues
SERVICE BRAKES
63 complaint(s) · 6 report a crash, fire, injury or death
SERVICE BRAKE ASSIST MESSAGE CAME ACROSS SCREEN AFTER I WAS UNABLE TO PUSH DOWN BRAKE PEDAL.
ENGINE
57 complaint(s) · 1 reports a crash, fire, injury or death
loss of oil due to engine defect and need new engine. engine and car at dealership. engine has not been torn apart to find cause. occupants could have died because of engine stoppage... GM wants owner…
UNKNOWN OR OTHER
34 complaint(s) · 2 report a crash, fire, injury or death
THE AC SYSTEM PRODUCES A TOXIC CHEMICAL SMELL CAUSING THE DRIVER AND/OR PASSENGER TO OPEN THE WINDOWS IN ORDER TO REMOVE THE TOXIC ODOR. THE SMELL IS INTERMITTENT AND CAN BE MODERATE TO EXTREMELY POT…
ELECTRICAL SYSTEM
26 complaint(s) · 1 reports a crash, fire, injury or death
TWICE WITHIN THE LAST TWO MONTHS MY ENTIRE RADIO SHUT OFF, MY SCREEN WENT BLACK AND SO DID MY GAUGES FOR AT LEAST 20 SECONDS. THEN THEY JUST CAME BACK ON AND PICKED UP WHERE IT LEFT OFF.
POWER TRAIN
26 complaint(s)
In January 2022, I purchased a 2020 GMC Terrain from a local GMC certified dealership along with an extended warranty. In July 2022, I started to experience intermittent acceleration issues. The issue…
FUEL/PROPULSION SYSTEM
25 complaint(s)
VEHICLE WAS ON 1/8 OF A TANK,I TRIED TO FILL, IT WOULD ONLY TAKE ON 5 GALLONS OF FUEL, GAS GAUGE READ FULL. REPORTED TO DEALER, THERE IS A 'BULLETIN' ON THE VEHICLE, FUEL TANK WAS REPLACED. AFTER SUCC…
VEHICLE SPEED CONTROL
11 complaint(s) · 1 reports a crash, fire, injury or death
WHEN CRUISE CONTROL IS ENGAGED AT 71MPH, HOLDING +RES BUTTON TO INCREASE SPEED AND RELEASING IT AT 77MPH SETS CRUISE SPEED TOO HIGH. CAR CONTINUES TO ACCELERATE. CRUISE GETS SET AT 100MPH AND ACCELER…
SERVICE BRAKES, HYDRAULIC
7 complaint(s)
The contact owns a 2020 GMC Terrain. The contact stated while driving 20 MPH, while attempting to slow down, the brake pedal was depressed; however, the brake pedal felt abnormally stiff. In addition,…
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
5 complaint(s) · 2 report a crash, fire, injury or death
The emergency breaking system failed to engage. Failure to engage caused collision with another car
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
4 complaint(s)
The contact owns a 2020 GMC Terrain. The contact stated that while attempting to restart the vehicle, the vehicle failed to start. The vehicle was towed to the local dealer who diagnosed that the fuel…
The 10 components named in the most complaints are shown, of 36 named in all.
These complaints are filed under TERRAIN, a name NHTSA also uses for other versions of this car, so some may concern those versions.