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Audi SQ5 TDI Review



Independent Review

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AUDI'S BUNCH OF FIVES

Audi's SQ5 TDI brings massive power and torque to the premium part of the mid-sized SUV sector. It's one heck of a package. Jonathan Crouch reports.

Ten Second Review

The Audi SQ5 TDI does what few thought was either advisable or possible, namely packing a 347PS diesel powerplant into a mid-sized SUV. Do you really need that much power? Not really. Would you like it though? You bet. It's not cheap but it does bring a welcome shot of sparkle to the Q5 line up.

Background

Yes, it's an SUV. But it's an SUV unlike any you've probably ever experienced before. The key reason why lies beneath the bonnet. Tucked under here is a 347PS twin turbo V6 TDI diesel powerplant endowing this mid-sized 4x4 with phenomenal punch. In 2018, this second generation SQ5 was first launched in 3.0-litre TFSI 354PS petrol form, but in 2019, that engine was then replaced by the 347PS Electrically Powered Compressor-boosted 3.0-litre TDI mild hybrid diesel unit from the S4. That's created a very credible performance flagship for the Q5 range.

With the SQ5, you have all of the practical aspects of a normal Q5. That means it'll quite happily do the family duties, commute in comfort, put in a performance at IKEA and be low key enough for you to happily park on the street without a worry. Yet somehow, this model still retains the ability to keep up with a Porsche Cayman sports car. Quite an all-rounder then.

Driving Experience

Like the first generation SQ5, the basis for this model's well-rounded CV is a muscular V6 TDI engine, but the original car's BiTDI powerhouse is replaced here by a unit supported by a single turbocharger, a separate electrically powered compressor for split-second response and a mild hybrid system to underpin the thrilling performance with appropriate efficiency. The result is mammoth maximum torque of 700Nm from barely more than idling speed, peak power of 347PS and a 5.1-second 0-62mph sprint capability. All that torque offers instant go, channelled through an eight-speed tiptronic automatic transmission to the road via quattro all-wheel drive. Like most Audis, the top speed is electronically limited to 155mph.

This car's electrically powered compressor is the ideal assistant for the turbocharger. It is active whenever the exhaust gas flow provides too little energy to drive the turbocharger, i.e. when starting off and accelerating in the low-rev range up to 1,650 rpm. Options include 'S-specific adaptive air suspension', Dynamic steering and a sport differential on the rear axle which actively distributes the power between the rear wheels during dynamic cornering.

In case you were wondering if a diesel S model might sound a bit, well, dieselly, Audi has fitted the SQ5 with a specially developed sound actuator in the exhaust system which brings a bit of bass and purpose to the exhaust note. The SQ5 sports a broadly similar electromechanical power steering system to the rest of the Q5 range while sport suspension reduces its ride height by 30 millimetres. The Audi drive select driving modes system alters ride, steering, throttle and gear change timings. Needless to say, with the lowered ride height and low-profile tyres, this is one SUV that you won't want to be pointing at a rutted track.

Design and Build

The SQ5 certainly looks the part. The bumpers up front and in the rear are complemented by more strongly contoured, S-specific air inlets and a diffuser with a honeycomb grille. Another S-specific feature is the radiator grille with double aluminium slats and contrasting trim elements in matt twilight grey. Matrix LED headlights are optionally available, featuring a special Q signature and adding dynamic indicators at the front. The rear bumper houses the S-specific twin exhaust tailpipes of the dual-branch exhaust system and an aluminium diffuser clasp.

Inside, contrasting stitching on the leather steering wheel and S sport seats create an elegant ambiance and the brand's familiar 12.3-inch 'Virtual Cockpit' digital instrument binnacle screen is standard. The S sport seats are upholstered in fine Nappa leather with diamond stitching and are electrically adjustable. Matt brushed aluminium inlays are standard and an exclusive carbon inlay is optionally available. Aluminium-look shift paddles enable the driver to quickly shift the tiptronic's gears. The pedals and footrest are finished in stainless steel. The optional 'rear seat bench plus' seating in the SQ5 is split into three segments. Depending on the position of the rear seat bench, the luggage compartment has a standard capacity of 500 to 610-litres. When the rear bench is folded down, this volume grows to 1,550-litres.

Market and Model

There are two QS5 variants, the standard model, priced at around £55,000 and the top 'Vorsprung' version, which costs around £68,000. Most will want the base derivative and will be considering key options like 'S-specific adaptive air suspension', Dynamic steering and a sport differential on the rear axle, along with the 'rear seat bench plus' sliding rear bench. The headlights and rear lights feature LED technology and the dynamic indicators at the front and rear send distinctive signals. The SQ5 TDI 'Vorsprung' variant upgrades to Matrix LED headlamps with segmented clusters that can be individually dimmed to divert the light beam around oncoming and leading traffic.

The seats offer a pneumatic massage function and brushed aluminium inlays are standard, with carbon inlays available as an option. SQ5 TDI and SQ5 TDI Vorsprung models also feature the brand's 'MMI navigation plus with MMI all-in-touch' infotainment package, operable via an 8.3-inch display. This incorporates Audi connect, which connects the SQ5 TDI to the internet via LTE and provides a WiFi hotspot for passengers' mobile devices. The UK equipment list also includes Audi phone box inductive charging and the Audi smartphone interface, bringing Apple CarPlay and Android Auto into the car. For particularly discerning hi-fi fans, the Bang & Olufsen Sound System with 3D sound is standard for the SQ5 TDI Vorsprung and available as an option for the SQ5 TDI.

Cost of Ownership

Somewhat remarkably for an SUV that will get to 62mph in around five seconds, should you choose to drive the standard model in a less demented fashion you could see 32.5mpg, according to WLTP combined cycle tests. Of course, it'll be hard to resist prodding the turbo and electrical compressor into life at any opportunity and in the real world, if you can get anything over 25mpg, you've got some rather saintly restraint, but that's still not a bad return for such a potent and useful vehicle. The WLTP CO2 figure for the standard model is 228g/km. Both variants are BiK rated at 37%.

Audi says that the MHEV mild hybrid tech used in this SQ5 TDI can reduce real-world fuel consumption by as much as 0.7 litres per 62 miles. At its core is a belt alternator-starter (BAS) connected to the crankshaft. During deceleration, it can recuperate up to 12 kW of energy. This electrical energy is stored in the lithium-ion battery, from where it is dynamically distributed to the consumers in the electrical system.

If the driver lifts off the accelerator at speeds of between 34mph and 99mph the car can, depending on Audi drive select setting and driving situation, either recuperate, run at idle with the clutch disengaged or coast with the engine off for up to 40 seconds. The BAS restarts the engine the next time the accelerator is depressed, and does so noticeably more quickly and smoothly than a conventional starter. MHEV technology allows for start/stop operation at a speed of up to 13mph.

Summary

The Audi SQ5 TDI is a fascinating glimpse into the state of the SUV building art. Okay, so shoving a hugely powerful diesel engine into a mid-sized SUV doesn't sound like rocket science, but this is no ordinary engine and the Q5 is no ordinary vehicle. The combination of these constituents moves the genre on a good few steps. All too often with premium brands, and especially with Audi, the fast all-wheel drive estate cars already on offer are so good it leaves you wondering why you'd bother with the SUVs. The SQ5 poses just one question to that mindset: why not?

With 347PS on tap, you're never short of power and with 700Nm of torque on tap, you won't even need to buy a caravan. Just screw a towing eye to the side of your house and drag it up the road. But is this car a wee bit over the top? Probably. Will you love it regardless? Most definitely.


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