Extended warranty worthiness profile

2018 Mercedes-Benz GLC 300

Broad repair planning ranges plus reported complaint, recall and manufacturer communication signals. Reports describe submitted cases and do not measure the probability of failure.

86complaint reports

12recall campaigns

193manufacturer communications

6leading reported components

Animated diagnostic view representing the 2018 Mercedes-Benz GLC 300

Model-year reading

What the 2018 record can and cannot say

Owners submitted 86 complaints for the 2018 Mercedes-Benz GLC 300 in this database. That count lands 24 above the median year in this model file, without adjusting for sales or time on the road.

The leading tag is Engine, attached to 27 reports. Its 31.4% share points toward a contract section worth reading, not the next component destined to fail.

The largest applicable parts midpoint belongs to Engine replacement or major internal repair at $7,000. Coverage has value only if the administrator accepts both the component and the cause.

Vehicle configuration

2018 EPA specification range

The official dataset contains 3 matched configurations for this model year. The range reflects trim and drivetrain choices, not changes to the complaint count.

Vehicle classSmall SUV

Fuel choicesGasoline

Drive layoutsFour-wheel drive and Rear-wheel drive

Engine range2 L; 4 cylinders

EPA efficiency24 mpg

Transmission typesAutomatic

EPA figures vary by configuration. Confirm the exact engine, drive layout and fuel system from the VIN or original window sticker. Source: FuelEconomy.gov vehicle data, updated 2026-06-16.

Estimated repair bills

Major repair cost range

Parts and labor benchmarks combined with an independent-shop labor model for Dallas, TX. Published model estimates calibrate supported repairs; model-year configuration data removes incompatible scenarios.

Repair	System	Estimated range
Engine replacement or major internal repair	Engine	$5,860-$16,847
Transmission replacement	Transmission	$3,492-$11,122
Transfer case replacement	Driveline	$2,044-$8,129
Turbocharger replacement	Turbo and Supercharger	$1,520-$6,465
Head gasket replacement	Engine	$2,286-$3,619
Timing chain replacement	Engine	$1,895-$2,968
Catalytic converter replacement	Exhaust and emissions	$2,241-$2,517
Steering rack replacement	Steering	$2,164-$2,584
Strut and control arm repair	Suspension	$946-$4,495
Fuel injector set replacement	Fuel System	$772-$4,607

Compare years

Other Mercedes-Benz GLC 300 model years

202521 reports · 3 recalls 202428 reports · 7 recalls 202363 reports · 11 recalls 202254 reports · 2 recalls 202161 reports · 9 recalls 202067 reports · 16 recalls 201946 reports · 12 recalls 201886 reports · 12 recalls 201798 reports · 12 recalls 2016132 reports · 12 recalls

Check warranty worthiness Model overview Adjust costs by city