2020 Porsche 718 Boxster vs. 2020 Audi TT

Detailed Review, Specifications & Comparison

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Safety

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The 718 Boxster PDK offers optional Porsche Active Safe, which use forward mounted sensors to warn the driver of a possible collision ahead. If the driver doesn’t react and the system determines a collision is imminent, it automatically applies the brakes at full-force in order to reduce the force of the crash or avoid it altogether. The TT doesn't offer collision warning or crash mitigation brakes.

Both the 718 Boxster and the TT have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras and available blind spot warning systems.

Reliability

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To reliably power the ignition and other systems and to recharge the battery, the 718 Boxster has a standard 175-amp alternator. The TT’s 140-amp alternator isn’t as powerful.

J.D. Power and Associates’ 2019 Initial Quality Study of new car owners surveyed provide the statistics that show that Porsche vehicles are better in initial quality than Audi vehicles. J.D. Power ranks Porsche 15th in initial quality. With 10 more problems per 100 vehicles, Audi is ranked 22nd.

J.D. Power and Associates’ 2019 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Porsche vehicles are more reliable than Audi vehicles. J.D. Power ranks Porsche second in reliability, above the industry average. With 16 more problems per 100 vehicles, Audi is ranked 8th.

From surveys of all its subscribers, Consumer Reports’ December 2019 Auto Issue reports that Porsche vehicles are more reliable than Audi vehicles. Consumer Reports ranks Porsche fourth in reliability. Audi is ranked 14th.

Engine

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The 718 Boxster has more powerful engines than the TT:

Horsepower

Torque

718 Boxster 2.0 turbo 4-cylinder

300 HP

280 lbs.-ft.

718 Boxster S 2.5 turbo 4-cylinder

350 HP

309 lbs.-ft.

718 Spyder 4.0 GT3 6-cylinder

414 HP

309 lbs.-ft.

TT 45 TFSI 2.0 turbo 4-cylinder

228 HP

258 lbs.-ft.

TTS 2.0 turbo 4-cylinder

288 HP

280 lbs.-ft.

TT RS Coupe 2.5 turbo 5-cylinder

400 HP

354 lbs.-ft.

As tested in Car and Driver the Porsche 718 Boxster is faster than the Audi TT (automatics tested):

718 Boxster 2.0

718 Boxster S

TT 45 TFSI

TTS

Zero to 60 MPH

4 sec

3.7 sec

5.2 sec

4.2 sec

Zero to 80 MPH

6.5 sec

n/a

8.7 sec

6.9 sec

5 to 60 MPH Rolling Start

5 sec

n/a

6.6 sec

5.6 sec

Passing 50 to 70 MPH

3.5 sec

n/a

4 sec

3.1 sec

Quarter Mile

12.5 sec

11.9 sec

13.8 sec

12.8 sec

Speed in 1/4 Mile

112 MPH

n/a

99 MPH

108 MPH

Top Speed

170 MPH

n/a

128 MPH

155 MPH

The flat cylinder configuration of the boxer engine in the 718 Boxster lowers its center of gravity, enhancing handling stability. The TT doesn’t offer a boxer engine configuration.

Fuel Economy and Range

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An engine control system that can shut down some of the engine’s cylinders helps improve the 718 Boxster Spyder’s fuel efficiency. The TT doesn’t offer a system that can shut down part of the engine.

Regenerative brakes improve the 718 Boxster’s fuel efficiency by converting inertia back into energy instead of wasting it. The TT doesn’t offer a regenerative braking system.

Regardless of its engine, the 718 Boxster’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. (Start/Stop isn’t accounted in present EPA fuel mileage tests.) The TT RS doesn’t offer an automatic engine start/stop system.

The 718 Boxster’s optional fuel tank has 2.4 gallons more fuel capacity than the TT (16.9 vs. 14.5 gallons).

Brakes and Stopping

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For better stopping power the 718 Boxster’s brake rotors are larger than those on the TT:

Boxster

Boxster opt.

Spyder

Spyder opt.

TT 45 TSFI

TTS

TT RS

Front Rotors

13 inches

13.8 inches

15 inches

16.1 inches

12.3 inches

13.3 inches

14.6 inches

Rear Rotors

11.8 inches

13.8 inches

15 inches

15.4 inches

11.8 inches

12.2 inches

12.2 inches

The 718 Boxster’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs standard on the TT 45 TSFI are solid, not vented.

The 718 Boxster stops much shorter than the TT:

718 Boxster

TT

70 to 0 MPH

143 feet

157 feet

Car and Driver

60 to 0 MPH

98 feet

103 feet

Motor Trend

60 to 0 MPH (Wet)

119 feet

122 feet

Consumer Reports

Tires and Wheels

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For better traction and acceleration, the 718 Boxster has larger standard rear tires than the TT (265/45R18 vs. 245/40R18). The 718 Boxster’s optional rear tires are larger than the largest rear tires available on the TT (305/30R20 vs. 255/30R20).

Suspension and Handling

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The 718 Boxster has standard front and rear gas-charged shocks for better control over choppy roads. The TT’s suspension doesn’t offer rear gas-charged shocks.

The 718 Boxster’s front to rear weight distribution is more even (45.5% to 54.5%) than the TT’s (60.7% to 39.3%). This gives the 718 Boxster more stable handling and braking.

The 718 Boxster S handles at 1.10 G’s, while the TT 2.0 TSFI Roadster pulls only .99 G’s of cornering force in a Motor Trend skidpad test.

The 718 Boxster S executes Motor Trend’s “Figure Eight” maneuver 1.6 seconds quicker than the TT 2.0 TSFI Roadster (23.1 seconds @ .89 average G’s vs. 24.7 seconds @ .77 average G’s).

Chassis

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The Porsche 718 Boxster may be more efficient, handle and accelerate better because it weighs about 200 to 250 pounds less than the Audi TT.

Cargo Capacity

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The 718 Boxster has a much larger trunk than the TT Roadster (9.7 vs. 7.5 cubic feet).

To make loading groceries and cargo easier when your hands are full, the 718 Boxster’s available trunk can be opened just by holding your hand near the emblem on the trunk, leaving your hands completely free. The TT doesn’t offer a hands-free gesture to open its trunk, forcing you to put cargo down if your hands are full.

Servicing Ease

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J.D. Power and Associates surveys of service recipients show that Porsche service is better than Audi. J.D. Power ranks Porsche first in service department satisfaction. With a 36% lower rating, Audi is ranked 8th.

Ergonomics

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When three different drivers share the 718 Boxster, the optional memory system makes it convenient for all three. Each setting activates different, customized memories for the driver’s seat position, steering wheel position, outside mirror angle and climate settings. The TT doesn’t offer a memory system.

The 718 Boxster’s optional easy entry system raises the steering wheel and glides the driver’s seat back when the door is unlocked or the ignition is switched off, making it easier for the driver to get in and out. The TT doesn’t offer an easy entry system.

The 718 Boxster’s instruments include an oil pressure gauge and a temperature gauge - which could save your engine! Often ‘idiot lights’ don’t warn you until damage has been done. The TT does not have an oil pressure gauge.

In case of a sudden change of weather, the 718 Boxster has a standard remote convertible top that can be raised from a distance to protect the interior of the vehicle from damage. The TT doesn’t offer a remote top, so the driver will have to run to the car, get in, turn the ignition on and raise the top to prevent the interior from being damaged.

In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The 718 Boxster offers available headlight washers to keep headlight output high. The TT doesn’t offer headlight washers.

While driving with high beams on, sensitive light sensors available for the 718 Boxster detect other vehicles which could be blinded and automatically switch to low beams. The TT doesn’t offer automatic dimming high beams.

The TT’s cornering lamps activate a lamp on the front corner when the turn signal is activated. The 718 Boxster’s optional adaptive cornering lights turn the actual headlight unit up to several degrees, depending on steering wheel angle and vehicle speed. This lights a significant distance into corners at any speed.

Optional air-conditioned seats in the 718 Boxster keep the driver and front passenger comfortable and take the sting out of hot seats in Summer. The TT doesn’t offer air-conditioned seats.

On extremely cold winter days, the 718 Boxster’s optional heated steering wheel provides comfort, allowing the driver to steer safely and comfortably before the car heater warms up. The TT doesn’t offer a heated steering wheel.

The 718 Boxster’s optional dual zone air conditioning allows the driver and front passenger to choose two completely different temperatures so people with different temperature preferences won’t have to compromise. This makes both the driver and front passenger as comfortable as possible. The TT doesn’t offer dual zone air conditioning.

To keep a safe, consistent following distance, the 718 Boxster PDK offers an optional Adaptive Cruise Control, which alters the speed of the vehicle without driver intervention. This allows the driver to use cruise control more safely without constantly having to disengage it when approaching slower traffic. The TT doesn’t offer an adaptive cruise control.

Economic Advantages

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Insurance will cost less for the 718 Boxster owner. The Complete Car Cost Guide estimates that insurance for the 718 Boxster will cost $885 to $3230 less than the TT over a five-year period.

The 718 Boxster will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the 718 Boxster will retain 57.09% to 60.51% of its original price after five years, while the TT only retains 45.66% to 46.08%.

Recommendations

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/06/06

Consumer Reports® recommends both the Porsche 718 Boxster and the Audi TT, based on reliability, safety and performance.

The Boxster was chosen as one of Car and Driver’s “Top Ten” for 15 of the last 16 years. The TT has never been a Car and Driver “Top Ten” pick.

The 718 Boxster was chosen as one of Automobile Magazine’s “All Stars” for 10 of the last 20 years. The TT has never been an “All Star.”

The Porsche 718 outsold the Audi TT by almost three to one during 2019.

© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.

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