2012 BMW Z4

2012 BMW Z4

Episode 3114
Auto Value and Bumper to BumperTire Rack "The Way Tire Buying Should Be"

Higher gas prices and fuel economy standards are once again downsizing automotive design. But this time around, it’s not so much the size of the car but the size of the engine that’s shrinking. But, leave it to BMW to have us actually looking forward to driving a 4-cylinder where once a six held court. It’s their first four banger available here in over a decade; and it’s in the Z4!

While an inline-6 is synonymous with BMW performance for us here in the States; around the world, BMW 4-cylinder power has been commonplace for years. And, with the 2012 BMW Z4 sDrive28i, it’s our turn again. But, the engine in question is a far cry from our last BMW 4-cylinder. Named TwinPower, it’s a 2-liter with one, twin scroll turbo where each side of the manifold is fed by a pair of exhaust runners. All of that plumbing makes for 240-horsepower and 255 pound feet of torque. And, as is usually the case when a turbo-4 replaces a natural-6, horsepower is down, but torque is up. 

Our car’s 6-speed manual transmission is standard, but an 8-speed automatic is an option. At our test track, the Z4 sprang off the line with little turbo lag on its way to 60 in 5.6-seconds, only about a half second slower than the Z4 twin-turbo six we tested in 2009. But, our 4’s power actually builds faster to a plateau, and stays fairly flat all the way to the 7,000 RPM red-line. The shifter is oddly rubbery, but still precise, as you make your way through the first 3 gears to the end of the quarter mile in 14.3-seconds at 97 miles-per-hour.

There’s a fairly aggressive exhaust note and things can get a little rough at the top of the rev-band, but for the most part it’s pretty smooth for a I4. And, believe it or not, this engine actually improves handling, as well. It takes 40-pounds off the front end, and sits further back towards the vehicle’s center, evening out weight distribution, resulting in a quicker turn-in and better balance overall. The double-wishbone-front and central- arm-axle-rear suspension remain unchanged; and provided a solid and relatively flat trip through the cones.

Styling is also unchanged, which is okay by us, as the long hood, short rear deck has perfect proportions and enough angles to keep things interesting. If you didn’t already know that it was a convertible, you’d have a hard time telling as the Z4’s hard top blends in seamlessly with the rest of the car. Open-air motoring is just the push of a button away; however, as the 2-piece aluminum top quickly folds into the trunk. 

Whether top up or top down, the Z4 has a very solid, but pleasant ride. Driving Dynamics Control, with three settings, adjusts damping as well as throttle and steering response, and stability control thresholds. Braking performance is excellent, bringing our Z4 to a halt from 60 in just 116-feet. 

Being a proper roadster, there are only seats for two, and everything in the cockpit is definitely driver oriented. Seats are snug and well bolstered. Everything seems put together very well, and our car sports body color matching yellow trim throughout. Trunk space is good for a roadster at 8 cubic-feet, and about half of that when the top is stowed.  

Government Fuel Economy Ratings for our manual with automatic start-stop are 22-City and 34-Highway. We averaged 30.5 miles-per-gallon of Premium. The Energy Impact Score is better than average, consuming 12.7-barrels of oil per year while emitting 6.9-tons of CO2.  

The Z4 sDrive28i is the new base model in the Z4 line-up starting at $49,525. Since that’s pretty pricey you might want to consider skipping TwinPower for now, and save over ten grand with the 1-Series Convertible. 

Still, BMW has big plans for the TwinPower four. Look for it to spread across the BMW line-up all the way up to the 5-series. And, when it comes right down to it, does it really matter what’s under the hood? What matters to us is hitting the start button, nailing the throttle, and having something thrilling happen. And in that regard the 2012 BMW Z4 sDrive28i certainly delivers. 

Specifications

  • Engine: 2 liter
  • Horsepower: 240
  • Torque: 255 lb-ft.
  • 0-60 mph: 5.6-seconds
  • 1/4 mile: 14.3-seconds @ 97 mph
  • EPA: 22 mpg city/ 34 mpg highway
  • Energy Impact: 12.7 barrels of oil/yr
  • CO2 Emissions: 6.9 tons/yr
2024 Polestar 2 3/4 Front

2024 Polestar 2

More Range And More Power For The Polestar 2

Episode 4333
Auto Value and Bumper to BumperTire Rack "The Way Tire Buying Should Be"

Volvo is well on their way to making the transition to an all-electric brand, but their sister-brand Polestar is already there. Now, we’ve spent lots of time in their all-wheel drive, five-door Polestar 2, having tested it in 2021, and a year later when a two-wheel drive version arrived. But, EV updates are coming quickly. So, let us be your guide for all that’s new with the Polestar 2.

While we are driving more EVs than ever, we’ve also been spending a lot of time recently circling back to ones we’ve previously tested. As in this new era of electrified vehicles, significant updates are arriving quickly, with R&D investments increasing and retrofitting them easier than ever. This is often done through software updates that can even be accomplished over the air. For 2024, the Polestar 2 has indeed gotten some software updates, but some physical ones as well.

Clearly aimed directly at Tesla’s Model 3 when it arrived; the Polestar 2’s build quality was vastly better, but range definitely came up short. So, addressing that was priority No. 1; and for ’24 the Polestar can travel up to 20% farther than before while consuming 9% less energy, and when it comes time to charge it back up, it can do that 34% faster too.

2024 Polestar 2 Dead Front
2024 Polestar 2 Profile
2024 Polestar 2 3/4 Rear
2024 Polestar 2 Dead Rear
2024 Polestar 2 Charge Port
2024 Polestar 2 Wheel
2024 Polestar 2 Badge
2024 Polestar 2 Badge 2
2024 Polestar 2 Dead Front2024 Polestar 2 Profile2024 Polestar 2 3/4 Rear2024 Polestar 2 Dead Rear2024 Polestar 2 Charge Port2024 Polestar 2 Wheel2024 Polestar 2 Badge2024 Polestar 2 Badge 2

Range in the Single Motor version increases from a max of 270 to 320 miles thanks to a larger 82-kWh battery pack, and that solitary motor now powers the rear wheels, not the front wheels. It’s also bigger, coming in at 220 kW compared to the previous 170 kW front-wheel drive version, going from 231 to 299 horsepower.

Dual Motors keep the same 78-kWh battery, but still sees a boost from 260 to 276 miles and takes advantage of the larger rear motor for a new combined 310-kW output with 421 horsepower. Our test car has the added Performance Pack, which uses an additional 35 kW to deliver 455 horsepower and 546 lb-ft of torque, though max range drops to just 247 miles.

The new battery in rear-drive 2s will also charge faster, now accepting up to 205 kW for an 80% charge in 20 minutes; max for dual-motors stays at 155 kW, which puts an 80% charge at 34 minutes. Using 32 kWh of electricity per 100 miles, the Dual Motor earns a good efficiency rating.

The [Polestar] 2 has always been one of the most enjoyable EVs to drive, even more so now with that additional power coming from the rear motor.

Unfortunately, extremely cold temperatures kept us from seeing that increased range, as we were only on pace for about 194 miles in our test.

The 2 has always been one of the most enjoyable EVs to drive, even more so now with that additional power coming from the rear motor. And especially when equipped with the Performance Pack as it not only includes more power, but adds 20-inch forged wheels, upgraded brakes, and adjustable Ohlins Dual Flow Valve performance dampers. It greatly improves handling prowess without affecting ride quality, and is easily worth the $5,500 charge if you at all enjoy driving.

Even on a 20-degree track day there was plenty of grip through our handling course. No understeer or oversteer, and lots of feedback through the wheel. There was a nice, strong launch off the line that properly planted us firmly in the seat, and rocketed us to 60 in 4.5 seconds. Power delivery stayed pretty intense up until about 80 mph when there was a definite tapering off. Still, it was a 13.4-second quarter-mile at 102 mph; smooth, quiet, and stable the whole way.

2024 Polestar 2 Driver Side Dash
2024 Polestar 2 Passenger Side Dash
2024 Polestar 2 Front Seats
2024 Polestar 2 Steering Wheel
2024 Polestar 2 Instrument Cluster
2024 Polestar 2 Center Display
2024 Polestar 2 Shifter
2024 Polestar 2 Rear Seats
2024 Polestar 2 Front Trunk
2024 Polestar 2 Trunk
2024 Polestar 2 Driver Side Dash2024 Polestar 2 Passenger Side Dash2024 Polestar 2 Front Seats2024 Polestar 2 Steering Wheel2024 Polestar 2 Instrument Cluster2024 Polestar 2 Center Display2024 Polestar 2 Shifter2024 Polestar 2 Rear Seats2024 Polestar 2 Front Trunk2024 Polestar 2 Trunk

When this car debuted, its Google-based infotainment setup was a novelty, but since then, more and more manufacturers are just “Googling it” so it doesn’t seem out of place at all. The wireless phone charger is easy to access, and there’s a great Harmon/Kardon sound system and panoramic sunroof to enhance the in-cabin experience. Exteriors have also been enhanced with a smooth grille insert and new wheel choices.

Hatchback practicality means 14.3 cu-ft of easy to access cargo space with split-folding seatbacks for longer items and expanding the space to 38.7 cu-ft. Plus, there’s even a sizeable storage bin up front under the hood.

Single Motor Polestar 2 pricing now starts at $51,300, with Dual Motors starting at $56,700; topping out at $64,400.

For a car manufacturer that hasn’t even been around for a decade yet, Polestar has kept itself busy, totally transforming their latest model in just a few years, making the 2024 Polestar 2 even more appealing. They are certainly off to a good start, and with a host of Polestars just over the horizon, including some all-important utility vehicles, this star will be shining even brighter.

Specifications

As Tested

  • Motor Setup: Dual Motor
  • Horsepower: 455
  • 0-60 mph: 4.5 seconds
  • EPA Range: 247 miles
  • Efficiency : 32 kWh / 100 miles
  • Battery Size: 78-kWh
  • Torque: 546 lb-ft
  • 1/4 Mile: 13.4 seconds at 102 mph
  • MW Test Loop: ~ 194 miles
  • Peak Charging Rate: 155 kW