2017 head-to-head · Compact Car

2017 BMW 3 Series Plug-in Hybrid vs Mercedes-Benz C-Class Plug-in Hybrid

MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.

Swap sides
✓ Cheaper to run
$1,722/ year to fuel
71 MPGe + 30 MPG

RWD · 2.0L 4-cyl turbo · 8-speed automatic · 71 MPGe + 30 MPG

✓ Cheaper to run
$1,837/ year to fuel
51 MPGe + 30 MPG

RWD · 2.0L 4-cyl turbo · 7-speed automatic · 51 MPGe + 30 MPG

The 2017 BMW 3 Series Plug-in Hybrid is the cheaper one to run. Driving 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, it costs about $1,722 a year to fuel (71 MPGe + 30 MPG), versus $1,837 for the 2017 Mercedes-Benz C-Class Plug-in Hybrid (51 MPGe + 30 MPG). That's roughly $115 a year, or about $575 over five years.

Your numbers

Change these to match your driving and local prices. Every figure and chart on this page updates.

Fuel cost over 10 years

  • BMW 3 Series Plug-in Hybrid
  • Mercedes-Benz C-Class Plug-in Hybrid

Side by side

BMW 3 Series Plug-in HybridMercedes-Benz C-Class Plug-in Hybrid
$1,722 Your annual fuel cost $1,837
71 MPGe + 30 MPG Combined efficiency 51 MPGe + 30 MPG
66 MPGe / 28 MPG City 45 MPGe / 28 MPG
78 MPGe / 34 MPG Highway 61 MPGe / 32 MPG
47 kWh Electricity use (kWh/100 mi) 56 kWh
350 mi Driving range 410 mi
14 mi All-electric range 9 mi
96 cu ft Passenger volume 91 cu ft
9 cu ft Cargo volume 10 cu ft
189 g/mi Tailpipe CO₂ (g/mi) 215 g/mi
9/10 EPA fuel economy score 8/10
10/10 EPA greenhouse gas score 9/10
2 hrs Charge time at 240V 1.5 hrs
Plug-in hybrid Powertrain Plug-in hybrid
Premium gas + electricity Fuel Premium gas + electricity
2.0L 4-cyl turbo Engine / motor 2.0L 4-cyl turbo
8-speed automatic Transmission 7-speed automatic
RWD Drivetrain RWD

✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.

BMW 3 Series Plug-in Hybrid vs Mercedes-Benz C-Class Plug-in Hybrid across model years

  • BMW 3 Series Plug-in Hybrid
  • Mercedes-Benz C-Class Plug-in Hybrid

Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.

How they differ

The Mercedes-Benz C-Class Plug-in Hybrid goes farther between stops: about 410 miles on a full tank and charge, compared with 350 miles for the BMW 3 Series Plug-in Hybrid.

Per EPA interior volume figures, the BMW 3 Series Plug-in Hybrid has more passenger space (96 vs. 91 cu ft); the Mercedes-Benz C-Class Plug-in Hybrid has more cargo space (10 vs. 9 cu ft).

Among 50 2017 compact cars, the BMW 3 Series Plug-in Hybrid ranks 27th and the Mercedes-Benz C-Class Plug-in Hybrid 29th for lowest fuel cost.

Frequently asked questions

Which is more fuel-efficient, the 2017 BMW 3 Series Plug-in Hybrid or the 2017 Mercedes-Benz C-Class Plug-in Hybrid?

Measured by cost to drive, the BMW 3 Series Plug-in Hybrid. The BMW 3 Series Plug-in Hybrid is rated 71 MPGe + 30 MPG combined and the Mercedes-Benz C-Class Plug-in Hybrid 51 MPGe + 30 MPG (EPA, most efficient configuration of each).

How much does it cost to fuel the 2017 BMW 3 Series Plug-in Hybrid vs. the Mercedes-Benz C-Class Plug-in Hybrid per year?

At 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, about $1,722 for the BMW 3 Series Plug-in Hybrid and $1,837 for the Mercedes-Benz C-Class Plug-in Hybrid.

Which has more range?

The Mercedes-Benz C-Class Plug-in Hybrid: about 410 miles versus 350 miles.

Which has more cargo space?

The Mercedes-Benz C-Class Plug-in Hybrid, with 10 cu ft of luggage volume versus 9 cu ft (EPA interior volume index).

BMW 3 Series Plug-in Hybrid vs Mercedes-Benz C-Class Plug-in Hybrid in other years

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