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2008 Mercury Mariner Hybrid (03/14/2007)

2008 Mercury Mariner Hybrid

Entered CNET Catalog: 03/14/2007

SKU: 100849331

Manufacturer: Mercury

Product summary

The goodThe good: The hybrid power train in the 2008 Mercury Mariner Hybrid, derived from the Toyota Synergy system, is the best around. Route guidance and features on its navigation system are good, as is the number of sources feeding into the audio system.

The badThe bad: The Mariner Hybrid gets pricey for the small SUV market. The maps in the navigation system have poor resolution, and Bluetooth cell phone integration isn't available.

The bottom lineThe bottom line: The 2008 Mercury Mariner Hybrid has the practical configuration of a small SUV, along with the low emissions and good fuel economy of a hybrid. Its cabin electronics are up-to-date, although not extraordinary.

Average user rating: from 5 users
4.0 stars

Editors' review

  • Editors' Choice: No
  • Reviewed on: 05/16/2007

Photo gallery: v
Photo gallery:
2008 Mercury Mariner Hybrid

Ford Motor Company finally realized that if you want to sell a high-tech car, you need to put high-tech gadgets in the cabin. In truth, the highest tech feature about the 2008 Mercury Mariner Hybrid is still the hybrid power train. But the newest model gets significantly improved cabin electronics over previous generations.

The Mercury Mariner Hybrid and the Ford Escape Hybrid share the same platform, which includes body style, seating configuration, hybrid power train, and cabin electronics. The key difference between the two cars is that the Mercury presents a more refined style, sort of like the clothes you might wear out to a nice restaurant as compared to what you'll lounge around in on a Saturday.

We've seen a lot of cars with a similar body style to the Mariner Hybrid recently, such as the Honda CR-V, the Mitsubishi Outlander, and the Suzuki Grand Vitara. All have a practical configuration, with four doors, easy access to the seats, and a rear cargo area that can be maximized by folding down the rear seats. The Mariner's design is chunky, giving the car a rugged look, although the grille suggests the refinement the Mercury brand is supposed to represent.

The previous generation of Mariner/Escapes had a tiny navigation screen and a navigation system running off of CDs. The new Mariner Hybrid gets a DVD-based navigation system with a proper-size screen, plus an in-dash six-disc changer. Its hybrid power train remains the same as in previous models, using a version of Toyota's Synergy system. This hybrid system is currently the best in the business.

Test the tech: Zero-emission driving
Because the hybrid system in the Mariner Hybrid can drive the car under electric power at low speeds, we staged a contest where CNET Car Tech editors Wayne Cunningham and Kevin Massy would see how long they each could keep the car going before the gas engine would start up. Each got their turn in the car, with a stopwatch keeping track of how long the car was under way.

We staged the contest on the east side of San Francisco's Potrero Hill. We chose that location so each driver could take the car down the long hill of 19th Street in order to charge up the car's hybrid battery pack before the start of each run. During the run down the hill, each driver kept the car's regenerative brakes lightly applied, which sent electricity to the battery. A power-flow diagram on the car's LCD showed the level of battery charge.


We used the long slope down 19th Street to charge the Mariner Hybrid's batteries.

Kevin Massy went first, starting off at the bottom of the hill with a fully charged battery. Knowing hard acceleration would quickly cause the battery to drain and the engine to start up, he kept a very light foot on the gas pedal. The Mariner Hybrid uses both its gas engine and electric motor to jointly power the car when hard acceleration is needed. Kevin meandered around city blocks with little traffic, just off Third Street in an industrial part of the city. At 7 minutes and 38 seconds, the battery display showed empty and the gas engine kicked into life.

Wayne Cunningham went next, running the Mariner Hybrid to the top of the hill, then down to recharge the battery pack. He drove a similar course as Kevin Massy, keeping to little trafficked industrial streets, with a light foot on the gas pedal. The car rolled along silently, using no gas and causing no emissions. But at 5 minutes and 1 second, the engine started up, running electricity back into the completely discharged battery. The battery hadn't gotten completely charged up for this second run, which partially explains the shorter running time.

In the cabin
With its clean-looking interior, the Mariner Hybrid accomplished its mission of being the upscale brother to the Ford Escape. The aluminum-look facing that covers the center stack contributes to the clean, modern look. And we were happy to see a regular-size navigation screen in the center stack after our experience with the previous generation of this car.


Although we like the features on the navigation system, the map isn't the nicest we've seen.

While the new DVD-based navigation system is a big improvement, it uses an ugly map with low resolution. We saw this same navigation/stereo component in the Ford Expedition, although there is no voice-command function in the Mariner Hybrid. Besides its ugly map display, the navigation system is very functional. It has touch-screen operation, accurate route guidance, and many methods for entering a destination. We particularly like the ability to find the nearest freeway entrance or exit. You can also choose a destination from the map, but a couple of too-large onscreen buttons make this difficult. During route guidance, the navigation system reads out the names of streets, a nice high-end feature.

When you start up the car, it also lets you know it has an Audiophile sound system. That description is a bit of a stretch, as the car only gets six speakers and a subwoofer, when you get the Premium package. But it is a reasonably good-sounding system and will do for most people. Just don't expect deep bass or a particularly rich sound.


The channel guide for satellite radio makes it easy to find your favorite stations.

The audio system is controlled through the LCD, with easy-to-use tabs for selecting sources. And this car features the whole range, including a six-disc MP3 capable changer, an auxiliary input neatly mounted at the bottom of the stack, and satellite radio. One gripe about the MP3 CD display--it uses large buttons that take up a lot of screen real estate, limiting the amount of track information that is shown. Also, we would have liked buttons on the steering wheel for controlling the audio system.

A nice feature continued from previous Mariner Hybrids is the AC outlet located at the bottom of the stack, letting you plug in a laptop, a phone charger, or anything else. Bluetooth cell phone integration isn't available on the Mariner Hybrid, a feature we think appropriate for this class of car.

Under the hood
The hybrid system in the Mariner uses a 2.3-liter four-cylinder engine, with a 133 horsepower output, mated to a continuously variable transmission (CVT). The gas engine is augmented by a 70 kilowatt electric motor. A control module monitors the battery level, driver throttle input, and other car data to determine whether to run the car off the electric motor, or both the motor and the engine. It also decides when to use the engine to charge up the battery.

Although the CVT doesn't lend itself to an exhilarating driving experience, the combination of the engine and motor provide enough power to get the car moving, with reasonable acceleration. When we first got behind the wheel, we found ourselves changing our driving demeanor radically, trying to optimize use of the hybrid system. We tended to accelerate lightly and frequently check the power-flow diagram to see the battery charge. There is also a gauge on the instrument cluster that shows when the battery is being charged and when the motor is assisting the engine. The tachometer needle also points to a wide, green band when the engine is off, at a stop or at low speeds. The extra power is noticeable when the engine turns off, but the transition is not uncomfortable.


We got an estimated 45mpg in 15 minutes of city driving.

Once we got over the novelty of hybrid driving, we resorted to our usual heavy foot for freeway entrances and beating the traffic off of a light. In this more normal style of driving, we were probably getting worse gas mileage, but the car was completely up to it. The car let us drive exactly how we wanted to. The EPA hasn't published mileage figures for the Mariner Hybrid yet, but we got 24.7mpg in driving that was biased toward the freeway. To get a better handle on city mileage, we snapped a picture of the car's mileage graph, which records the last 15 minutes of driving. Averaging out those numbers, we estimate about 45mpg for city driving in heavy traffic.

The Mariner Hybrid isn't really meant for sport driving--it has some understeer and feels top heavy on the corners. We had a front-wheel-drive version, but all-wheel drive is available. We did end up taking the car over a particularly rough and windy mountain road, Las Tunitas, which winds from Highway 1, on the coast, to I-280. We were able to push the Mariner Hybrid pretty hard over this poorly paved road without feeling unsafe, so we would say the car handles moderately well.

In sum
We didn't have final pricing for our 2008 Mercury Mariner Hybrid, but expect to pay just less than $30,000 for one with a navigation and premium audio system. There are few choices for small hybrid SUVs, and we prefer the Mariner Hybrid over the Saturn Vue Green Line. Although the Vue is considerably cheaper, the Mariner's hybrid system is better. It offers greater boost from the motor and can drive the car under electric power. The navigation system and stereo, although not perfect, are also better than what we had in the Vue Green Line.

And the Mariner Hybrid also does reasonably well when compared to other small SUVs, such as the CR-V, the Outlander, and the Grand Vitara. The Outlander and CR-V have better cabin gadgets, but won't match the Mariner Hybrid for fuel economy.

User opinions

Select a User Opinion to view: 1 2 3 4 5
User Rating:
4.0 stars

out of 5 user reviews

Solid, but could be better

Pros: quiet, great fuel economy for AWD

Cons: lacks nice creature features, no power passenger seat

Review: For $100 more their cost, Ford could have put out a Mariner that would sell itself by word of mouth. Now they get this: There is no ETC in 2008 (coming in 2009), no radio controls on steering wheel (radio power button and instruument light adjustment both unlit), manual lumbar adjustment on driver's power seat (no power seat and no lumbar adjustment on passenger side). There is no seat memory, no back-up outside mirror adjustments, unsophisticated graphics on GPS system, only 2 lines on Sirius radio display, no sunshade extension for sunlight coming in side window, and no fold back rear seat headrests, so they have to be removed to fold rear seat sort of flat.

Having said this, I've driven my Mariner over 12,000 miles since August. I had to wait 4 months for this 2008 Mariner (Ford sent me a nice thank you note for buying my '2007' Mariner). It is comfortable and relatively quiet. My AWD gets 26-28 mpg, and has given me no problem. It really shines mileagewise in stop and go traffic, but the economy mode (electric engine only) doesn't run the air conditioning adequately in 80+ degree stop and go traffic. Fit and finish is 1970 standards, so the right passenger door is off a quarter inch, but it functions well, and rain accumulates in the bottom of both front doors if the vehicle is parked on a forward facing minimal incline (This will be interesting in a few years for those vehicles subject to road salt as the door bottoms will probably rust out.)

Ford could have done a better job, but they do have a niche with a hybrid mini-SUV in this size. Comfortably smaller and significantly cheaper than the Highlander. But I'm glad they're paying a royalty to Toyota for their technology.
User Rating:
4.5 stars

out of 5 user reviews

New and Love it!

Pros: comfort, ride, MPG, storage inside

Cons: hard to get

Review: I've had mine for a week. Love it so far. I am excited to see how the MPG, which is impressive already, gets better after the expected 2000-3000 engine break in period. Impressed with the overall performance and ride.
User Rating:
4.0 stars

out of 5 user reviews

very happy

Pros: hybrid technology without toyota highlander price

Cons: finish not quite up to import quality

Review: great suv - has all the features you want, solid, attractive and good value for the money. looked at a Toyota Highlander - equipped about the same - 12K more! Granted - slightly larger and better finish - but for 12K - you get the basic toyota engine - and save some cash.
User Rating:
3.5 stars

out of 5 user reviews

Nice Vehicle, but Ford/Mercury can DEFINITELY do better on MPG and Technology

Pros: Sound System, Road Handling, Comfort

Cons: Mileage not as posted, Poor Customer Service

Review: I live in Colorado and have had my 2008 Mercury Mariner for over 4 months and 5,500 miles now and have had no problems. It has proven to be a very effective vehicle for my uses and has proven to drive very well in mountain conditions. Also, I like the fact that if the correct oil is used, the oil does not need to be changed but every 5000-6000 miles.

However, the following is a list of issues I have had with the vehicle.
- The best milage I have had on any tank of fuel is 29.5 MPG. This is pretty good considering most cars. However, it is 15% below the sticker fuel economy advertised, even using 91 grade unleaded fuel. Plus, now that we are on winter fuel, I am down to 27.5 MPG using 91 grade uleaded fuel (20% below listing). This is very disappointing considering all the advertising done on this vehicle and it great MPG of 34.

- The vehicle does not come with bluetooth. This is very diappointing considering almost all vehicles come with bluetooth these days. They just released their SYNC technology for new 2008 vehicles being produced in fall 2008, however the Mariner Hybrid is not on the list.

- I have had problems with obtaining service. I purchased the vehicle in June 2008, but have yet to obtain the navigation DVD and owners manual from the dealer. The dealer states it has been on backorder, but it has been over 4 months now. Service just doesn't seem to be a priority.

- The airbag light does intermittantly come on, but it eventually goes off after driving it a couple times.

- The vehicle uses the braking system to help recharge the battery, however, it does make some noise when using it to break slowly.

- The heated seats are nice, however they have a tendency to overheat and become extremely hot.

- You cannot use flexfuels such as ethanol with the vehicle. It appears that Ford/Mercury still have decided that supporting OPEC and other oil nations is a good thing.

Overall, I believe that the Mercury Mariner has been a good vehicle. It is comfortable and has some features that the Ford Escape doesn't have for the exact same price. As a hybrid, it is a step in the right direction, but of course, when we're talking about USA car companies, it's a baby step. (1980s technology finally being applied in 2008 at a substantial markup.)
User Rating:
4.5 stars

out of 5 user reviews

Own one and love it

Pros: Gas Mileage, Styling, Navigation, Size

Cons: MPG Computer not 100% accurate, no memory for seat pre-sets

Review: I traded in my Nissan Murano on a 2008 Mercury Mariner Hybrid and don't regret the decision at all. There's only been 1 fill up that I got less than 30 MPG, my current average after 8000 miles is 31.4. I do track my mileage (manually) as the computer is generally 1-2 MPG better that actual results.

I do miss the memory presets on my seat/mirror positions that the Murano had as well as the steering wheel audio controls.

I have no complaints with the Navigation system other than when I'm in West Virginia it routinely tells me that route guidance cannot be provided even though the roads are on the map.

The audio system is great, I did not have satellite built-in on the Murano so having Sirius built-in is great. My only complaint there is that the artist/song information should display in the upper black area of the screen in Satellite mode like it does for RDS in FM mode.

As for the CNET review, I'm not sure that the Hybrid technology is from Toyota. From what I've read Ford developed their own system in-house and then made an agreement with Toyota not to sue each other since their systems were so similar.

I test drove the 2007 Saturn VUE Greenline and did not like it at all.

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2008 Mercury Mariner Hybrid specifications

  • Basic car properties
  • Body style SUV
  • Trim levels Base
  • Available Engine Hybrid
  • Safety Features
  • Smart airbags Standard
  • Antilock brakes Standard
  • Traction control Not available
  • Stability control Not available
  • Adaptive cruise control Standard
  • Entertainment
  • Satellite radio Optional
  • Connection for portable MP3 sound system Standard
  • MP3 CD-enabled sound system Standard
  • Climate/convenience
  • Multizone climate control Standard
  • Smart (set-and-forget) climate control Standard
  • Heated/cooled seats Optional
  • Keyless entry Standard
  • Two-way security system Standard
  • 120V power outlet Standard
  • 12V power outlet Standard
  • Drivetrain Technology
  • Drivetrain available Front-drive
  • Navigation
  • Trip computer Standard
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